Assuming fully decomposed,the volume of $CO_2$ released at STP on heating 9.85g of $BaCO_3$ (Atomic mass of Ba=137) will be

Question

$\begin{array}{1 1}(a)\;0.84L& (b)\;2.24L \\(c)\;4.06L&(d)\;1.12L\end{array}$