The Greatest Mass Extinction of All Time, Which Occurred at the End

The greatest mass extinction of all time, which occurred at the end of the Permian period:

A) affected plants living on land more than any other group.
B) was spread out over several million years.
C) resulted in the extinction of more than 90% of all existing marine species.
D) only impacted a few geographic regions, although the impact in these regions was staggering.
E) did not affect terrestrial species.