A 65-Year-Old Man Comes to the Office Due to Worsening

A 65-year-old man comes to the office due to worsening urinary symptoms over the past year. he reports a poor urinary flow and straining during urination.  He feels the symptoms are bothersome but are not affecting his quality of life.  Examination shows a smooth, symmetrically enlarged prostate without nodules or tenderness.  There is no suprapubic tenderness. Prostate-specific antigen level is 2.5 ng/mL and normal urinalysis. A finasteride is prescribed. After 7 months of priscribing the medication his symptoms improve and his prostate has regressed in size.  Which of the following histological patterns was most likely present at the time of initiation of treatment?

A) Hyperplasia of prostate with predominance of epithelial components
B) Hyperplasia of prostate with predominance of muscular element
C) Hyperplasia of prostate with predominance of collagen
D) Hyperplasia of prostate with predominance of both collagen and smooth muscles