Identify $X$ and $Y$ in the following sequence:
$C_2H_5Br$ $\xrightarrow{X} \text{product}$ $\xrightarrow{Y} C_3H_7NH_2$

• A
  $X = KCN, \, Y = LiAlH_4$
• B
  $X = KCN, \, Y = H_3O^{+}$
• C
  $X = CH_3Cl, \, Y = AlCl_3/HCl$
• D
  $X = CH_3NH_2, \, Y = HNO_2$