0.078g of a hydrocarbon occupy 28.414mL of volume at S.T.P.The empirical formula of the hydrocarbon is CH.The molecular formula of hydrocarbon is

Question

$\begin{array}{1 1}(a)\;C_2H_2&(b)\;C_6H_6 \\(c)\;C_8H_8&(d)\;C_4H_4\end{array}$