GKFix MCQ Question

What is the correct expression for Kc for the reaction: 2NO(g) + Br2(g) ⇌ 2NOBr(g)?

• A. Kc = [NO]^2[Br2]/[NOBr]^2
• B. Kc = [NOBr]/[NO][Br2]
• C. Kc = [NOBr]^2 / [NO]^2[Br2]
• D. Kc = [NOBr]^2 / [Br2]