Which One of the Following Statements About the Lake Victoria

Which one of the following statements about the Lake Victoria cichlid fishes is false?

A) The adaptive radiation of the estimated 300 species of cichlid fish was very rapid and took place during the last 200,000 years.
B) The adaptive radiation of the Lake Victoria cichlids may have resulted from a key evolutionary innovation.
C) Speciation of the Lake Victoria cichlids was mainly allopatric and resulted from varying lake levels.
D) The diversity of the Lake Victoria cichlids continues today because the lake is devoid of predators.
E) Many of the Lake Victoria cichlids have very specialized adaptations that allow them to occupy diverse habitats within the lakE.