A79-year-old retired banker comes to your office for evaluation of difficulty with urination; he gets up five to six times per night to urinate and has to go at least that often in the daytime. he does not feel as if his bladder empties completely; the strength of the urinary stream is diminished. he denies dysuria or hematuria. this problem has been present for several years but has worsened over the last 8 months. you palpate his prostate. what is your expected physical examination finding, based on this description? a. normal size, smooth b. enlarged size, boggy c. enlarged size, smooth d. normal size, boggy