Given below are two statements: 
Assertion (A):  Pent-1-ene and pent-2-ene are position isomers.
Reason (R):  Position isomers differ in the position of a functional group or a substituent.

 

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.