Food Webs, Like the One in the Figure Below, Help

Food webs, like the one in the figure below, help biologists predict the impact to a community that changes in species abundance might produce.
After studying the food web above, select a reasonable outcome following the complete disappearance of leopard seals.

A) Killer whales may decline since they eat leopard seals
B) Chilean seas bass may increase since one of their primary predators is gone.
C) Baleen whales will increase as more krill becomes available
D) Sperm whales may decline as squid become less abundant.