Assertion: A=set of even natural numbers <8; B=set of prime numbers < 7, then number of relation from A to B are  $2^6$ 
Reason: Number of relations from the set A to B are $2^{n\left(A\right).n\left(B\right)}$

Both Assertion and Reason are correct, and Reason explain Assertion

Assertion correct and Reason incorrect 

Assertion incorrect and Reason correct. 

Both Assertion and Reason are correct, and Reason does not explains Assertion