Elevation in the boiling point for 1 molal solution of glucose is 2K. The depression in the freezing point for 2 molal solution of glucose in the same solvent is 2K. The relation between Kb and Kf is

• A. Kb = 1.5 Kf
• B. Kb = 0.5Kf
• C. Kb = Kf
• D. Kb = 2Kf