Question: What climate was restricted to the equatorial areas?

Is "As this was continuing, it is thought that a large meteor smashed into earth, creating the Chicxulub Crater in an event known as the K-T Extinction, the fifth and most recent mass extinction event, in which 75% of life on earth went extinct, including all non-avian dinosaurs." the correct answer?
Pick your answer from: (a). yes. (b). no.
(b).