System 1 Is 3

System 1 is 3.5 moles of a monatomic ideal gas held at a constant volume of 2.22 L as it undergoes a temperature increase.System 2 is 3.5 moles of a diatomic ideal gas held at a constant volume of 2.22 L as it undergoes a temperature increase equal to the temperature increase of System 1.The pressure increase for system 1 is and for System 2 is during the temperature increases.What is the ratio of ?

A) 1.00
B) 0.600
C) 1.67
D) 2.50