Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to reduce energy use in the kitchen [title] Buy appliances with the energy star designation if you are buying new appliances in the united states. [step] The energy star designation is given to energy-efficient appliances in a program sponsored by the environmental protection agency and the department of energy. [title] Realize energy savings of about 20 percent by using a convection oven, which circulates air around the food you are cooking.

Ending1: [title] Consider purchasing microwaves, which power energy at a rate of 100 percent. [title] Protect the amount of energy you use in the household by using the energy star designation when you're doing something else. Ending2: [step] This is a moderately low-heat oven that allows more power to be used. This is going to consist significantly more energy than it would if the oven itself were about 1 kilowatt. Ending3: [step] A convection oven functions to heat up the air all around the food. This means that the food will heat up faster quickly, which in turn results in fewer calories hitting your food. Ending4: [substeps] Convection ovens work better the more surface area the food has. That is, they will work better on cookies or muffins than banana bread.

Answer format: ending1/ending2/ending3/ending4