GKFix MCQ Question

What is the relationship between Kp and Kc for the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g)?

• A. Kp = Kc(RT)^1
• B. Kp = Kc(RT)^–1
• C. Kp = Kc(RT)^2
• D. Kp = Kc(RT)^–2