Emma tried to explain to her mother that computers are everywhere. Her mother does not believe her, and challenges Emma to find a computer in their home, as she knows she does not own a computer. Which of the following examples do you think Emma would show her mother as example of computer?

A$.$ Her coffeemaker that she has set to turn on and make coffee every morning at the same time.

B$.$ Her hot water heater that has to be manually reset every time the power goes out.

C$.$ The sprinkler she has to turn on and off when she wants to water her plants.

D$.$ The carpet steamer she uses to clean her rugs when they get dirty.