A heat pump absorbs 10kW of heat from outside environment at

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A heat pump absorbs 10kW of heat from outside environment at 250 K while absorbing 15 kW of work. It delivers the heat to a room that must be kept warm at 300K. The coefficient of Performance (COP) of the heat pump is _________.

[GATE ME 2017 Set 1]

A 1.66

B 2.56

C 3.35

D 2.89