GKFix MCQ Question

What is the equilibrium constant for the reaction 3H2(g) + N2(g) ⇌ 2NH3(g)?

• A. [H2]^3[N2] / [NH3]^2
• B. [NH3] / ([H2]^3[N2])
• C. [NH3]^2 / ([H2]^3[N2])
• D. [H2]^2 / ([NH3]^3[N2])