$25g$ of $MCl_4$ contains $0.5\;mol$ chlorine then its molecular mass is

Question

$\begin{array}{1 1} 100\;g\;mol^{-1} \\ 200\;g\;mol^{-1} \\ 150\;g\;mol^{-1} \\ 400\;g\;mol^{-1}\end{array}$