2 moles of an ideal monoatomic gas at temperature Tₒ is mixed wth 4 moles of another ideal monoatomic gas at temperature 2Tₒ then the temperature of the mixture is:

A. 5/3Tₒ
B. 3/2Tₒ
C. 4/3Tₒ
D. 5/4Tₒ