If the molar mass of glucose is 180.2 g mol$^{-1}$ and if 36 gm of glucose $C_6H_{12}O_6$ is present in 1000 gm of an aqueous solution of glucose,it is said to be

Question

$\begin{array}{1 1}(a)\;1molal\\(b)\;2molal\\(c)\;0.5molal\\(d)\;0.2molal\end{array}$