Chloroethane reacts with magnesium in dry ether to form $X$. When $X$ is hydrolysed a carbon compound $Y$ and $Z$ are formed. Which of the following is $Y$?

Question

( A ) $C_6H_6$
( B ) $C_2H_6$
( C ) $C_2H_4$
( D ) $C_2H_2$