The nurse has completed the education for a client prescribed hydrochlorothiazide (Microzide). Which statement made by the client indicates an understanding of the teaching?

A. I take my medication early in the morning.
B. I need to avoid salt substitutes and potassium-rich foods.
C. If I develop a cough, I should call my physician.
D. I really need to avoid grapefruit juice when I take this medication.