Standard entropy of $X_2, Y_2\: and\: XY_3$ are 60, 40 and 50 J/Kmol respectively. For the reaction, \[\] $ \large\frac{1}{2}$$ X_2 + Y_2 \rightarrow XY_3;\: \: \: \: \: \: \: \: \Delta H = -30\: kJ,$ \[\] to be at the equilibrium, the temperature will be

Question

$\begin {array} {1 1} (A)\;1250\: K & \quad (B)\;500\: K \\ (C)\;750\: K & \quad (D)\;1000\: K \end {array}$