How many moles of molecule are present in 15 g of $C_2H_4$(ethylene) . Given atomic mass of $C=12.0\;amu$ and of $H=1.0\;amu$

Question

$\begin{array}{1 1} (a)\;0.436\; mol \\ (b)\;0.536\; mol \\ (c)\;0.124\; mol \\ (d)\;0.654\; mol \end{array} $