GKFix MCQ Question

How can the power of the liquid layer (P_liquid) be conceptualized in this setup?

• A. As the power of a plano-convex liquid lens
• B. As the difference in the lens's power in air and in the liquid.
• C. As the sum of the lens's power in air and in the liquid.
• D. As the power of a plano-concave liquid lens