Equilibrial Species Are Shaped by ____,And Tend to Have a ____

Equilibrial species are shaped by ____,and tend to have a ____.  

A) K-selection; small body and short generation time
B) r-selection; large body and long generation time
C) K-selection; large body and long generation time
D) r-selection; small body and long generation time
E) r-selection; large body and short generation time