A Patient Has Been Prescribed Nifedipine (Adalat CC) as Treatment

A patient has been prescribed nifedipine (Adalat CC) as treatment for hypertension. The nurse would evaluate medication instruction as effective if the patient makes which statements?

A) "If I drink alcohol while taking this medication, I will get very sick to my stomach."
B) "I should stop taking my melatonin sleep medication."
C) "I should no longer drink grapefruit juice."
D) "I should no longer drink sports drinks with caffeine in them."
E) "I should stop taking my vitamin C supplement."