What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR(where, T1 and T2 are source & surrounding temperatures respectively.)?

• A. <img src="/_files/images/chemical-engineering/chemical-engineering-thermodynamics/420-415-1.png">
• B. <img src="/_files/images/chemical-engineering/chemical-engineering-thermodynamics/420-415-2.png">
• C. <img src="/_files/images/chemical-engineering/chemical-engineering-thermodynamics/420-415-3.png">
• D. none of these