Regarding Class – Aves : Assertion (A): They are warm-blooded animals. Reason (R): They are able to maintain a constant body temperature. Regarding (A) and (R) :

Question

( a ) Both A and R are correct but R is not the correct explanation for A
( b ) Both A and R are correct & R is the correct explanation for A
( c ) A is incorrect but R is correct
( d ) A is correct but R is incorrect