Explanation:-
In the SI system, the unit of power is Watt (W).
Kilowatt is equal to one thousand ( 103) watts.
The kilowatt-hour is a unit of energy and is equal to 1,000 watt-hours.
If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt-hours is the product of the power in kilowatts and the time in hours.
Final answer:-
Hence,the correct option is (A) i.e. power, energy.
