Thank you, Mark. Nathan, in terms of your broader question, let me just provide a little bit of perspective. As I think about the market, we still think Medicare Advantage is a very good long-term market. And as I said, we're committed to driving sustainable performance for the long term. Medicare Advantage delivers really strong differentiated value for seniors. I think you have to start there. And as you look at the aligned incentives across the system to deliver better outcomes and better care - it is very - it's a very strong marketplace, and it continues to grow. And importantly, it's incredibly popular with seniors with greater than 50% of seniors selecting Medicare Advantage today. So that's - against that backdrop, we know seniors value stability in their benefits year-over-year, and the items that are most important to them. And so, we have, as you heard from us earlier, look to make sure that we are in this market for the long-term, balancing that stability. So with what we know is happening in this market, we can make the right benefit decisions and again, feel that we positioned ourselves, and are making the right strategic investments, to improve our performance. We see this business maturing, as Mark shared in his comments as well. And again, been very intentional about our desire, or decision to exit certain programs or markets and plans where we didn't think, we had a long-term sustainable path to performance. And that combined with the risk models, made that choice and then again, reposition Puerto Rico, which we believe is still a very good market, but there were some actions that we knew, we had to take. So as we look at those decisions for the long-term, as Felicia shared, our business performed when you look at the mainland and take out those exits. We had very strong selling season. Again, I think that's a testament to the value of the benefits and our position. And importantly, we do believe we can grow this business profitably even in a year with hypercompetitive markets in certain cases where we outperformed the growth in our Blue markets, which, again, has always been a strategy we've had, is to go deeper in our Blue markets and to gain more share with the value of our brand as well as in other places. So again, we think it's a good market. We know we have some work to do in that market, but we feel we're positioning for the long-term and think that we can add distinctive value for seniors as part of our focus on whole health and continuation of coverage to stay Blue for life and all of their coverage. So, thank you very much for the question. Next question please?