The correct option is B a mixture of ether (B.P- 35 ∘C) and toluene (B.P-110 ∘C)
Simple distillation is used to separate volatile liquids from non-volatile impurities having sufficient difference in their in their boiling points.
A mixture of ether (B.P- 35 ∘C) and toluene (B.P-110 ∘C) is the correct answer since they have large boiling point difference.