An house heated with baseboard electrical heat needs about 10kW of power to keep the house at 20 C when the outside temperature is -5 C. If the baseboard heating is replaced with a heat pump with a coefficient of performance of 3.1 approximately how much power will be needed to keep the house at 20 C when the outside temperature is -5 C? (in practice the savings will be less, the occupants are likely to make the house warmer with cheaper heat and the amount of infiltration, outside air coming in, may change if forced air is used for the heat pump.) O 5 kW O 1.6KW O 3.2kW 10kW