Assertion (A): Acylation of amines gives a monosubstituted product whereas alkylation of amines gives a polysubstituted product.
Reason (R): Acyl group sterically hinders the approach of further acyl groups.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.


Hint:  Acyl group is more bulky than alkyl group

Assertion is a correct statement but the reason is a wrong statement.
Acylation of amine gives a monosubstituted product whereas alkylation of amino gives polysubstituted product because acylation in amino takes place at N-atom and alkylation takes place at o and p position.