87 yo man with 1 yr h/o of difficulty starting urinary stream and post void dribbling. nocturia. 30 yrs of DM, orthostatic hypotension. lisinopril and glyburide-current meds. BP 140/80 whil supine, 100/60 while standing, large prostate on examination, most appropriate med for pts urinary symptoms?
1.amlodipine
2.doxazocin
3.finasteride
4.metoprolol
5.oxybutinin