Assertion (A): Acetic acid has higher boiling point than n-propyl alcohol. Reason (R): A pair of carboxylic acid molecules are held together by two hydrogen bonds.

Directions: In the following question there are two statements: Assertion (A) and Reason (R). Consider both the statements independently and mark your answer as 

1. if A and R both are correct and R is the correct explanation of A 
2. if A and R both are correct and R is not the correct explanation of A 
3. if A is correct and R is incorrect 
4. if A is incorrect and R is correct 
5. if A and R both are incorrect