Pick out the wrong statement.

A. In solvent extraction, the distribution co-efficient should be as large as possible for solvent economy

B. With increase in pressure, the solubility of gases in solvent increases at a fixed temperature

C. Decrease in Murphree plate efficiency is an indication of entrainment in distillation coloumn

D. The capacity of a distillation coloumn is maximum at total reflux

Answer: Option D