单选题 Don't apply ice or butter or any other type of grease to burns. Also, don't cover a bum with a towel or blanket, because loose fibers might stick to the skin. When dealing with a serious burn, be careful not to break any blisters or pull off clothing stuck to the skin.
Do wash and apply antibiotic (抗生素) ointment (软膏) to mild burns. Head to the hospital for any bums to the eyes, mouth, or genital (生殖器的) areas, even if mild; any burn that covers an area larger than your hand; and any bum that causes blisters or is followed by a fever.
The paragraph centers on

• A. when to go to hospital.
• B. how to deal with bums.
• C. when antibiotic ointment is needed.
• D. how to use lee or butter to burns.