So, I'll tackle the first question, and let Vasant tackle the question on capital allocation and buybacks. So Darrin, I again, I think that there are -- and we're still talking about it there might be others, but I think the big, big opportunities here are e-commerce and cash displacement. Cash, $18 trillion spent on cash, and I think people are realizing that currency is a germ-carrying mechanism, and people don't want to be subject to it moving from one person to another person, it's actually catching the joins that way. So I do think cash displacement is going to really, really take off, and we've seen that in terms of the interest of governments to raise contactless limits, the interest of merchants to move to contactless, the interest of issuers, who are lagging behind to issue contactless enabled cards, and I hope we see it, as we start to talk to long tail sellers or merchants, who might have here to for resisted jumping into card acceptance, and they'll realize now that they really need to on a going forward basis if people shun cash. So, I think that's a big opportunity. Likewise, I think e-commerce is a big opportunity, and I think Ryan McInerney in his presentation, talked about the fact that somewhere around $0.15 or $0.16 on every dollar around the world is spent on visa cards and the face-to-face world, but when you move into the world of e-commerce, it's like $0.44 or $0.45 that's a big opportunity for us. And then as you said, and I mentioned earlier, I think there'll be some negative on travel, certainly in the short-term, and I think that people are going to be quite reticent to leave their country in the short-term until there is some advances because they don't want to be, they want to be stuck somewhere. They don't want to be for a prolonged period of time. So I think the degree that travel comes back is not clear, but I think this world is still a world of globe -- full of global citizens who ultimately are going to feel the urge and the desire to get back on airplanes and explore the vastness of the earth. We have not done the work, Darrin to say how these things offset one another. I think at this point we're more interested in studying the things that Vasant referred to in his remarks to get a better sense of kind of just the recovery before we get into how this might create some permanent change. Obviously, these are things we're talking about, but not things we've dimensioned as of yet, but I do think there is some exciting opportunities that will largely your offset or fully offset the changes in consumer behavior as it relates to grab. Let me ask Vasant to answer your question on capital allocation Darrin.