Assertion: Replacement fo -Cl group by -OH in chlorobenzene is easier if nitro group is present in the ring.
Reason: Nitro group leads to strengthening of the C-Cl bond in chlorobenzene.
A. If both assertion and reason are true and reason Is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assetion is true but reason is false.
D. If both assertion and reason are false.