Assertion : Bats and whales are classified as mammals
Reason : Bats and whales have four-chambered heart

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

B

Explanation

Bats and whales are the members of class Mammalia. The bats are the only mammals which have wings can realy fly while whales are the largest animals in existence. Both bats and whales have four chambered heart but birds and crocodiles also have four chambered heart.