This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Estrogen therapy for urinary incontinence acts by all mechanisms except 
Select and explain. 
A. Increase collagen deposition thereby increasing urethral coaptation., B. Increase α - adrenergic receptor sensitivity., C. Decreases vascularity of periurethral capillary plexus., D. Increase urethral blood flow and urethral closing pressure.
C: Decreases vascularity of periurethral capillary plexus.
Answer: C: Decreases vascularity of periurethral capillary plexus. 
Explanation: Oestrogen administration increases vascularity of periurethral capillary plexus. Especially useful in menopausal women with urinary incontinence.