In a reversible adiabatic process, the ratio of T1/T2 is equal to

• A. <img src="/_files/images/mechanical-engineering/thermodynamics/244-132-1.png">
• B. <img src="/_files/images/mechanical-engineering/thermodynamics/244-132-2.png">
• C. <img src="/_files/images/mechanical-engineering/thermodynamics/244-132-3.png">
• D. <img src="/_files/images/mechanical-engineering/thermodynamics/244-132-4.png">