Thanks for the question, David. And apologies to everybody for our phone dropping out. That's a first for us on an earnings call, but I guess – and everything has happened in the last 12 months, so why not that. As far as unit development, I know that's on everybody's mind. So just a couple of thoughts there. To the question of can we regain that 4% pace and is that in our cross hairs, and our goal certainly to get to 4% and beyond. And the answer is, certainly, yes. There's a lot of reasons why we're confident that we will get there over time. Our business model really has gotten stronger over the last 12 months. The shift to off-premise suits us well and improves our franchisees' economics. And obviously, in our open stores, we're seeing that show up as sales. Most of our franchisees are in good shape. They're coming out of this situation with – in good financial shape and they're ready to grow. Certainly, it's a more favorable real estate climate. And I will point out that in 2020, we actually opened over 2,400 gross units. So it's not as if the development pace at Yum! just disappeared. The challenge obviously with a lot of the closures, which we had for good reasons, things we've talked about over the years, wanting to close, particularly, Pizza Hut restaurants to strengthen our asset base. So we've got a lot of that behind us in 2020. And then, certainly, three out of our four brands grew last year and we got 3% growth in the global business when you exclude the Pizza Hut business. So all of those good proof points for why we can get back to 4%. As far as the timing though, I know the question is when and there is still some uncertainty on that, which is why we're not providing guidance on that number. We certainly can't be certain of the pandemic course. Since our last call, we've obviously seen flare-ups that have impacted our business. Yum! China talked about that as well last night. It's a challenging environment just to build stores. And there are markets that we want to get stores open and we're having trouble getting permits and getting the right people to construct the stores. And certainly, as we've changed our asset models, that has got our franchisees looking at making changes to the kinds of sites they pursue in some cases, the type of stores they build on those locations. All of that leads to some delays. And then, certainly, we all know in the development game in retail, it takes time to build the pipeline. And the fact that our pipeline was disrupted last year, we have to rebuild it. So confident that we can get back to 4% and beyond. Still not at a point where we're going to commit to a certain timeframe on that. But the mood is definitely one of confidence.