A mixture is prepared by mixing 1.50 mole Toluene and 3.50 mole Benzene. If the vapor pressure of pure Benzene and Toluene are 40.55 kPa and 20.24 kPa, repectively at 0°C, then the total vapor pressure of the mixing will be:

A 42.3 kPa

B 40.50 kPa

C 34.46 kPa