If a 10-Mile-Wide Comet Hit Earth,how Would This Likely Affect

If a 10-mile-wide comet hit Earth,how would this likely affect the history of life?

A) A mass extinction would occur, followed by lots of evolutionary change among descendants of the survivors.
B) A slow climate warming and drying would begin, decreasing the biological diversity on Earth.
C) Continental drift would be reversed, and all the continents would slowly be pushed together again.
D) Most species would become extinct, and the rest would remain more or less unchanged.