Assertion : The duck-billed Platypus and the spiny anteater, both are egg-laying animals yet they are grouped under mammals.
Reason : Both of them have seven cervical vertebrae and 12 pairs of cranial nerves.

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

A

Explanation

The duck billed platypus and the spiny anteater are primitive oviparous, reptiles like mammals and these are included in subclass prototheria of class mammalia. Both of them have 12 pairs of cranial nerves and 7 pairs of cervical nerves.