The Mother of a Young Child Calls the Clinic and Tells

The mother of a young child calls the clinic and tells the nurse that she has just discovered head lice in her child's hair. What is the best instruction by the nurse?

A) "Purchase a lotion and apply it to her scalp, let it dry, and brush it out in the morning."
B) "Purchase a lotion and apply it to her scalp and leave it on for 12 hours."
C) "Purchase a lotion and apply it to her head three times a day for two weeks."
D) "Purchase a lotion and apply it to her head and body, and leave it on for 24 hours."