A 67-Year-Old Man Who Suffers from Hypertension and Benign Prostatic

A 67-year-old man who suffers from hypertension and benign prostatic hyperplasia (BPH) has been receiving medications for both of those conditions. During his routine checkup, he tells his physician that he has experienced frequent episodes of light-headedness upon standing up. Which of the following medications is most likely responsible for these episodes?

A) Metoprolol
B) Propranolol
C) Ephedrine
D) Clonidine
E) Terazosin