Charlie Is a 65-Year-Old Male Who Has Been Diagnosed with Hypertension

Charlie is a 65-year-old male who has been diagnosed with hypertension and benign prostatic hyperplasia. Doxazosin has been chosen to treat his hypertension because it:

A) Increases peripheral vasoconstriction
B) Decreases detrusor muscle contractility
C) Lowers supine blood pressure more than standing pressure
D) Relaxes smooth muscle in the bladder neck