Assertion (A) : IUPAC name of CH3 CH = CH- C ≡ CH is pent -2- en -4- yne.
Reason (R) : While determining the position of functional group rule of least set of locant is applied.
Assertion (A) and reason (R) both are correct and reason (R) is correct explanation of assertion (A).
(B) Assertion (A) and reason (R) both are correct but reason (R) is not correct explanation of assertion (A).
(C) Assertion (A) is correct while reason (R) is incorrect.
(D) Assertion (A) is incorrect while reason (R) is correct.