GKFix MCQ Question

What is the correct expression for Kp for the reaction PCl5 ⇌ PCl3 + Cl2?

• A. (P_PCl5)/(P_PCl3)(P_Cl2)
• B. (P_PCl3)(P_Cl2)/(P_PCl5)
• C. (P_PCl3)/(P_PCl5)(P_Cl2)
• D. (P_Cl2)/(P_PCl5)