A Pressure Vessel Contains CO₂ (P_CO2 = 3

A pressure vessel contains CO₂ (P_CO2 = 3.78 atm) and O₂ (P_O2 = 6 atm) gases at a total pressure of 9.78 atm.What is the mole-fraction of CO₂ and O₂ gases,respectively?

A) 37, 58.7
B) 0.61, 0.39
C) 2.59, 1.63
D) 0.39, 0.61
E) 0.63, 1.59