Pick out the wrong statement.

A. The operating line always lies above the equilibrium solubility curve in case of a single component absorber

B. The operating line always lies below the equilibrium solubility curve in case of a single component stripper

C. The operating pressure in solvent extraction system should be below vapor pressures of all components

D. The solubility of a particular gas in ideal solution in any solvent is always the same

Answer: Option C