Assertion: Phenol forms `2,4,6-`tribromophenol on treatement with `Br_(2)` water at `373K`.
Reason: Phenol is `o-p`-directing group.
A. If both assertion and reason are correct and reason is correct explanation for assertion.
B. If both assertion and reason are correct but reason is not correct for assertion.
C. If assertion is correct but reason is incorrect.
D. If both assertion and reason are incorrect.