Thank you, Menck. Please move to Slide 22. Here, we will make some comments about the market fundamentals. During the quarter, zinc prices were up by 10% compared to fourth quarter of 2019, down 13% from the third quarter of 2020. This increase was mostly driven by strong economic activity in China, whose investments in infrastructure continue to contribute to zinc demand and due to a weaker U.S. dollar. In terms of market fundamentals, most lines in China and Latin America have resumed activities in the second quarter of 2020. But concentrate supply has not been sufficient to meet the improved demand from the smelters, particularly in Asia. We can see it clearly by the current level of the spot TCs. In terms of our home market, Latam, zinc metal demand recovered after the decrease in the second quarter of 2020. Demand has been recovered, mostly driven by a mix of pent-up demand, starts replenishment and fiscal stimulus, particularly in Brazil. In addition, the update long-term balance between supply and demand shows that the previous estimated increase in supply should be lower than forecasted, meaning market balance should remain tight. So in our view, metal prices have the fundamentals to remain at higher levels. Moving to Slide 23. On this slide, we present the performance of other metals, lead, copper and silver had a strong performance in the fourth quarter of 2020. Similar to zinc price, the increase in metal prices from the third quarter levels, was driven by a weaker U.S. dollar and a positive outlook for global growth. For 2021, the outlook is positive, given how economies have responded to the barriers, economic stimulus packages. The U.S. dollar performance should also continue to impact base metal prices. Obviously, COVID-19 remains a risk effect to this scenario, and we will continue to evaluate its development and the measures adopt to mitigate the virus spread, including worldwide vaccination. Moving now to our last slide. We have delivered a strong operational result, overcoming the challenges and restrictions imposed by the COVID-19 global outbreak. The performance in the second half of the year demonstrates the resilience of our business, the contribution of Nexa Way program and the commitment of our team with operational excellence and their enthusiasts to transform. As I mentioned in my previous slide, COVID-19 remains a risk factor, and we will continue to evaluate the impact in our value chain. The Peruvian government recently announced a new quarantine period in the country that should last until mid-February. Different from last year, mining and smelting operations were not suspended. We remain confident that the demand for our products will continue to recover. Next, will maintain its priority on capital discipline and cost control. We believe we have an attractive pipeline of projects, and we have been preparing ourselves to generate long-term value, building the mine of the future. Thank you all for your time, and let's move on to the Q&A session.