The Boiling Point of Toluene Is 110^oC and That of Benzene

Multiple Choice

The boiling point of toluene is 110^oC and that of benzene is 80^oC. The vapour above a solution that has mole fraction of benzene = 0.5,

A) has mole fraction toluene in 0.5.
B) has mole fraction of toluene less than 0.5.
C) has mole fraction of toluene greater than 0.5.
D) is pure benzene.
E) is pure toluene.