When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

vapour pressure of component A to the total pressure.

vapour pressure of component A to that of component B.

vapour pressure of component A to the partial pressure of A.

partial pressure of component A to the total pressure.

When the liquid phase and vapour phase of a binary system obeys Raoult

1.	When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of
A.	vapour pressure of component A to that of component B.
B.	vapour pressure of component A to the total pressure.
C.	vapour pressure of component A to the partial pressure of A.
D.	partial pressure of component A to the total pressure.
Answer» B. vapour pressure of component A to the total pressure.