Which One of the Following Statements About Mass Extinctions Is

Which one of the following statements about mass extinctions is false?

A) The five major mass extinctions were all followed by a rebound in species diversity.
B) By definition,in mass extinctions all major groups are affected equally.
C) Major changes in the direction of evolution have often occurred after mass extinctions.
D) The five major mass extinctions were caused mainly by geological events and,perhaps,collision with asteroids.
E) Rebound from the current,sixth mass extinction may be slower than in previous mass extinctions.