In which of the following reaction, aromatic character is retained?
A. `C_(6)H_(6)overset(H_(2)//Ni)toX`
B. `C_(6)H_(6)underset(Zn//H_(2)O)overset(O_(3))toY`
C. `C_(6)H_(6)underset(AlCl_(3))overset(CH_(3)COCl)toQ`
D. `C_(6)H_(6)underset("light")overset(Cl_(2))toR`