Which Precaution Is Important for the Nurse to Teach an Older

Which precaution is important for the nurse to teach an older patient who is prescribed methimazole (Tapazole) ?

A) "If you miss a dose, go to the nearest emergency department and get an injection of methimazole."
B) "Be sure to wear sunscreen and a hat whenever you go outside into the sunshine."
C) "Drink at least 3 liters of fluid daily while taking this drug."
D) "Avoid contact with crowds or anyone who is ill."