A 49-Year-Old Male Patient Is in the Clinic for a Follow-Up

A 49-year-old male patient is in the clinic for a follow-up visit 6 months after starting a b-blocker for treatment of hypertension.During this visit,his blood pressure is 169/98 mm Hg,and he eventually confesses that he stopped taking this medicine 2 months ago because of an "embarrassing problem." What problem with this medication most likely caused him to stop taking it?

A) Urge incontinence
B) Dizziness when standing up
C) Excessive flatus
D) Impotence