Mark Crumpacker - Chipotle Mexican Grill, Inc.
Management
Sure, David, I can add a little bit to it. I mean, one of the things we've encountered, and this has been true really since throughout all of 2016, and we're actually seeing evidence of this in the middle – beginning in to the middle of 2015 is that our customers really do want to see something new from Chipotle and there's a lot of pent-up demand for this. And in the type of marketing that we do, it's incredibly effective to have something new and exciting for customers to come in and enjoy. And so, we've been up against trying to claw back occasions that were lost to other competitors, of which there are very, very many, of course, now in this category. And as we studied our customers, they fall into several different categories, but within the lapsed categories we have people who are called lapsed defectors and then lapsed rejectors. And when you look at these different types of customers, the majority of these fall into lapsed defectors, so these are people who used to be regular Chipotle customers and now are very, very infrequent at the cadence of maybe once a year or they stopped coming altogether, and these customers, when we talk to them in research, have a couple of primary objectives which are interesting. I mean, one is that we saw boredom as the number one. And second, as no queso. So, we're talking a lot about this one particular menu item, but I shouldn't underestimate how much potential it has, and then when you combine it with some of the other things that we're looking at doing, it really could add a lot of momentum to the marketing programs that we've had. So, I'm very encouraged by all this, so hopefully that gives you a little bit of perspective into why maybe some of our marketing hasn't driven as hard as we would like.
David E. Tarantino - Robert W. Baird & Co., Inc. (Broker): I guess and if I could just follow up on that, if I may. I guess on the whole notion that customers asking for something new, does this mark a change in the philosophy at Chipotle? Because, I guess, the business was built around sort of simple and focused execution, as you mentioned in your prepared remarks, Steve, and now we're talking about new products and putting advertising behind them, which sounds a lot more like a traditional approach in the restaurants category. So, I just wonder, I guess, if you could comment on whether you think there's a new reality at Chipotle where we're going to need to see new menu items to drive traffic on a longer-term basis.