Consider the following reaction: $2NH_3(g)+CO_2(g)\rightarrow (NH_2)_2CO(aq)+H_2O(l)$. If $637.2\;g$ $NH_3$ and $1142\;g$ $CO_2$ are allowed to react, then which one is the limiting reagent ?

Question

$(a)\;NH_3\qquad(b)\;CO_2\qquad(c)\;either\;may\;be\qquad(d)\;none\;of\;these$