GKFix MCQ Question

In the reaction Ag₂O(s) + 2HNO₃(aq) ⇌ 2AgNO₃(aq) + H₂O(l), what is the correct expression for Kp?

• A. Kp = pAgNO₃² / (pAg₂O × pHNO₃²)
• B. Kp = pH₂O × pAgNO₃² / pAg₂O
• C. Kp is not applicable
• D. Kp = pAgNO₃² × pAg₂O / pHNO₃²