The mother of a child who has pediculosis says that she plans to use kerosene to wash the child's hair just like her grandmother did for her. What is the best response for the nurse to make?

C Kerosene can cause serious injury to your child. Try using the shampoos that are not dangerous.' B Kerosene will work, but the shampoo we recommend is less irritating.' A Your grandmother was a wise woman. Kerosene is the major ingredient in the special shampoo we recommend.' D Your grandmother was not a physician. Please do what the doctor recommends.'