A) \[{{(COP)}_{heat\,\,pump}}={{(COP)}_{refrigerator}}+2\]
B) \[{{(COP)}_{heat\,\,pump}}={{(COP)}_{refrigerator}}+1\]
C) \[{{(COP)}_{heat\,\,pump}}={{(COP)}_{refrigerator}}-1\]
D) \[{{(COP)}_{heat\,\,pump}}={{(COP)}_{refrigerator}}\]
Correct Answer: B
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