64 yo M has worsening urinary sx. For past year, he had difficulty initiating urination, a weak urinary stream & increased urinary frequency. He wakes up 1-2x/night to urinate. He's a former smoker w/20 pack yr hx & Drinks 1-2 alcoholic beverages each evening. BMI 30, Rectal exam symmetrically enlarged, nontender prostate w/smooth surface. 4 wks ago hga1c 7%, serum creatinine 0.9. Next step in management of urinary sx?
a) Urodynamic studies
b) Initiate alpha-blocker therapy
c) Prostate-specific antigen testing
d) Transurethral resection of the prostate