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A heat pump with a COP rating of 2 a. is 20% more efficient than electric resistance heating b. delivers 200 Btus for every Watt-hour

A heat pump with a COP rating of 2

a. is 20% more efficient than electric resistance heating

b. delivers 200 Btus for every Watt-hour of electricity consumed

c. is 200% efficient

d. delivers 20 Btus for every Watt-hour of electricity consumed

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