Consider the following reaction
Phenol `overset(Zn)underset("dust")rarr X overset(CH_(3)CI)underset(underset(AICI_(3))("Anhydrous"))rarr Y overset("Alkaline")underset(KMnO_(4))rarrZ`
The product Z is
A. Benzaldehyde
B. Benzoic acid
C. Benzene
D. Toluene