A Father Calls the Clinic Because His Son Has Head

A father calls the clinic because his son has head lice.He reports to the nurse that he has used "that special stuff you spray on to the hair,but nothing is happening." What should be the nurse's first recommendation?

A) Get a prescription for a second product, malathion.
B) Add a lotion product that remains on the scalp for 8 hours.
C) Use a nit comb to remove nits from the hair shafts.
D) Comb through the hair with mineral oil to loosen the lice from the hair shafts.