Assertion : Phenol forms 2, 4, 6-tribromo-phenol on treatment with Br2- water at 273 K.
Reason: Phenol is o, p- directing group.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false