Derik De Bruin - Bank of America Merrill Lynch
Analyst · Bank of America. Please go ahead
Great. So, I think we're all a little bit surprised that the EPS guidance is a little bit lower for 2016 than we had anticipated. I guess – I mean, Stephen, you went through a number of the ones, I think where our model was off. I think we had the share count was a little higher and the interest expense was a little bit higher, I think, sort of giving the biggest hits there. But can you just talk a little bit more about sort of like the mix impacts? If I remember correctly from the old Invitrogen, Life days, as that business sort of picks up, it has a much bigger impact in terms of the hit to the gross margin on that business from FX. I guess, can you talk a little bit more about sort of like mix dynamics, how that's playing out and sort of – you obviously are seeing stronger strength in the LPS business, and just sort of walk through what's going on and just sort of how you're thinking about sort of the product mix here and how much of that is impacting the business?
Marc N. Casper - President, Chief Executive Officer & Director: So, Derik, I'll start and then Stephen will add to it. So, thanks for the question. There's $0.19 of FX headwind in the 2016 numbers, right? So, that's actually what the big thing that needs to be understood, right? There was $0.06 incremental after our guidance in the fourth quarter that we drove past and actually beat. So when you take it, 6% to 8% is our guidance for the year; on an FX-neutral basis, it's 8% to 10%. And obviously, it's only assuming the $500 million of capital deployment, which is the buybacks we already did in 2016. Obviously, we're going to get the benefit of Affymetrix later in the year. And we obviously have tremendous amount of capacity to do other things. We just don't want to decide exactly what we're going to do, sitting here, at the end of January, but there are things that we will do to drive more but we wanted to provide absolute clarity of very strong underlying operating performance, big FX headwind that we're working our way through and lots of balance sheet opportunity down the road. Stephen, anything you want to talk about on mix?
Stephen Williamson - Chief Financial Officer & Senior Vice President: So, mix, no, nothing unusual in the mix side that's driving anything positive or negative in 2016.