Larissa hasn't had a good night's sleep in ages. She has tried everything she can think of: she leaves a nightlight on, she turns on a soothing television show to play in the background, and she plays with her phone to get relaxed. Which of these things should Larissa change to improve her sleep?

A.She should change the color of her nightlight.

BShe should turn off her electronics.

CShe should play a variety of games on her phone.

DShe should mute the television for total silence.