For the Reaction 3H₂(g) + N₂(g) $\leftrightharpoons$ 2NH₃(g), K_c = 9 $\circ$

For the reaction 3H₂(g) + N₂(g) $\leftrightharpoons$ 2NH₃(g) , K_c = 9.0 at 350 ^$\circ$ C. What is the value of $\Delta$ G at this temperature when 1.0 mol NH₃, 5.0 mol N₂, and 5.0 mol H₂ are mixed in a 2.5 L reactor

A) -33.2 kJ/mol
B) -35.2 kJ/mol
C) -37.2 kJ/mol
D) -39.2 kJ/mol
E) None of the above