An aromatic amine (X) was treated with alcoholic potash and another compound (Y) when foul smelling gas was formed `C_(6)H_(5)NC`. The compound (Y) was formed by reacting a compound (Z) with `Cl_(2)` in the presence of slaked lime. The compound (Z) is:
A. `CHCl_(3)`
B. `CH_(3)COCH_(3)`
C. `CH_(3)OH`
D. `C_(6)H_(5)NH_(2)`