A mixture of `C_(3)H_(8)` and `CH_(4)` exerts a pressure of 320 mm Hg at temperature T K in a V litre flask. On complete combustion, gaseous mixture contains `CO_(2)` only and exerts a pressure of 448 mm Hg under identical conditions. Hence mole fraction of `C_(3)H_(8)` in the mixture is

Options

A. 0.2
B. 0.8
C. 0.25
D. 0.75

Answer

A