When Conover and Munch Harvested Small Fish,large Fish,or Random Sizes

When Conover and Munch harvested small fish,large fish,or random sizes of fish,what hypothesis were they testing?

A) that slot limits would decrease the size of fish in future generations
B) that harvesting larger fish would increase the size of fish in future generations
C) that harvesting larger fish would decrease the size of fish in future generations
D) that harvesting fish randomly would decrease the size of fish in future generations
E) that harvesting fish randomly would increase the size of fish in future generations