Assertion: Phenol gives o- and p- nitrophenol on nitration with concentrated HNO3 and H2SO4 mixture. Reason: -OH group in phenol is o-,p- directing.

Assertion and reason are both correct and the reason is the correct explanation for the assertion. Assertion and reason are both incorrect. Assertion is correct but the reason is incorrect  Assertion is incorrect but the reason is correct.

Assertion is incorrect but the reason is correct.

Phenol reacts with concentrated HNO3, it gives 2,4,6-Trinitophenol and on reaction with dilute HNO3 it gives ortho- and para-nitrophenol at 298K.