An azeotropic mixture of ethanol and water is to be separated in a distillation column using benzene as an entrainer

Q. An azeotropic mixture of ethanol and water is to be separated in a distillation column using benzene as an entrainer. At the column operating conditions, two liquid phases are formed on a tray. The degree(s) of freedom of the system for the choice of intensive properties at equilibrium is(are)                                           

Ans: 1 to 1 (or) 2 to 2