GKFix MCQ Question

What is the correct expression for the total vapour pressure in terms of x2?

• A. p_total = p2⁰ + (p1⁰ - p2⁰)x2
• B. p_total = p1⁰ + (p1⁰ - p2⁰)x2
• C. p_total = p2⁰ + (p2⁰ - p1⁰)x2
• D. p_total = p1⁰ + (p2⁰ - p1⁰)x2