For a gas Cₚ – Cᵥ = R in a state P and Cₚ – Cᵥ = 1.10 R in a state Q, Tₚ and TQ are the temperatures in two different states P and Q respectively. Then
a. Tₚ = TQ
b. Tₚ < TQ
c. Tₚ = 0.9 TQ
d. Tₚ > TQ