Please choose the correct answer to the question: Why is it better to wear a white T-shirt than a dark blue T-shirt in the summer?

Answer1: Light-colored clothes let more air in. Answer2: Light-colored clothes prevent sweating. Answer3: Light-colored clothes are not as heavy as dark-colored clothes. Answer4: Light-colored clothes reflect more sunlight than dark-colored clothes.

Answer format: answer1/answer2/answer3/answer4