<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 63-year-old man comes to the physician because of a 4-month history of urinary hesitancy and poor urinary stream. Digital rectal examination shows a symmetrically enlarged, nontender prostate. Serum studies show a prostate-specific antigen concentration of 2 ngmL N 4. Pharmacotherapy with finasteride is initiated. Which of the following is the most likely effect of this drug?? A: Decreased internal urethral sphincter tone, B: Increased prostatic apoptosis, C: Decreased production of urine, D: Increased penile blood flow, E: Decreased bladder contractions,  <response>: This is a question about the mechanism of action and effects of finasteride in treating benign prostatic hyperplasia BPH. The patient has symptoms of BPH including urinary hesitancy and poor stream. Finasteride is a 5-alpha reductase inhibitor that blocks the conversion of testosterone to dihydrotestosterone DHT. DHT promotes prostate growth, so blocking its production can shrink the prostate and improve urinary symptoms. B: Increased prostatic apoptosis 