Jakob's room gets really cold in the winter and he wants to purchase a heater to make the room warmer. It's currently 14C in the room, ideally, he'd want his room to be warmer than that but the weather outside is getting colder. At his local home appliance store, there's a 2400W heater for $69.00, a 1500W heater for $54.00 and a 1000W heater for $45.00 that's for sale. He knows that the rate of heat leaving the room is 6000 kJ/h and the heat coming in from people, lights and appliances is 600 kJ/h in total. Which heater should he get and why