After Mass Extinction Events, the Fossil Record Shows

After mass extinction events, the fossil record shows:

A) new animal phyla evolved after each extinction event.
B) descendants of survivors of the extinction event gave rise to entirely new lineages of animals.
C) diversity, in terms of genera, increased to levels above what was present just before the previous extinction.
D) groups of organisms replace each extinct group with a new, more derived, descendant group.