Asian Parents Bring Their Child to the Hospital with What

Asian parents bring their child to the hospital with what appears to be burns or abrasions on the neck, spines, and ribs. The parents use the words cao gao. The nurse is aware that these physical findings and the term cao gao refers to:

A) an Asian practice of burning and inflicting pain on children who won't obey
B) parents rubbing a pumice stone over a child's body to sand off evil spirits
C) rubbing a coin or a spoon heated in oil on an ill child's neck, spine, and ribs
D) burning incense on a rice paper on a child's upper body to bring good luck