A. Many people regard the whale as a fish and do not realize that it is a mammal
B. Many people regards the whale as a fish and do not realize that it is a mammal
C. Many people regards the whales as fishes and does not realize that it is a mammal
D. Many people regard the whales as a fish and does not realize that it is a mammal
E. Many people regarding the whales be a fish and does not realize That its a mammal
