Sure Eric, this is David. To start with your question on our allocation between pools, TBAs and within the specified sector, as I said in my prepared comments, specified pools have obviously done quite well, it's obviously a function of the interest rate environment, but again, it is also driven by deterioration in the TBA deliverable, which has occurred pretty continuously over – about the past year. What we've seen in the TBA market is that coupon swaps are relatively flat. So it's advantageous for originators to deliver higher loan rate coupons or mortgages into lower coupons, more profitable, number one. Number two, as the GSEs have gravitated toward this UMBS model, they haven't really been able to compete with one another, given the similarity or the essential, identical securities that are created. So they have been more aggressive with originators on buying IO from them, which also has incentivized those originators to deliver higher loan rate loans into coupons. And in addition, originators have differentiated themselves based on their aggressiveness in terms of refinancing. There's a lot of originators out there that are very aggressive about getting their borrowers to refinance. And so the deliverable isn’t that much worse from that standpoint. So it's not so much a function of the richness in specified pools, but also driven by what the deliverable looks like. Now within specified pools, we are certainly cognizant of pay ups, and we are very sensitive to that. And so our focus has been largely over the last quarter on lower pay up pools, differentiating between gross WAC and servicer, and paying small premium to get what we think is good relative value compared to TBAs and not elevating that overall pay up exposure too much. That's where we've been focused, but we do hold considerable amount of very high quality specified pools. We're not of the mindset that we're going to transition out of those in the lower pay up pools, because we need that protection. But the marginal dollars spent on relatively lower pay up pools. Now in terms of your question about premium, coupon premium relative to equity, certainly it's a concern obviously given the fact that we are in a lower rate environment and we do have a lot of premium in our portfolio. But we also have to understand that the portfolio is very well hedged from a duration standpoint and quite dynamically hedged, both in up rate and down rate scenarios. And so we actively manage that exposure. And obviously if the market sells off, pay ups will diminish, but we actively manage it and we're certainly aware of exposure relative to equity.