Identify 'B' in the following reaction : $CH_2 = CH_2+HCl \longrightarrow A+ 2[H] \longrightarrow B + HCl$

Question

$$\begin {array} {1 1} (a)\;CH_4 & \quad (b)\;C_2H_6 \\ (c)\;C_2H_5Cl & \quad (d)\;C_2H_5OH \end {array}$$