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
Urethral closure involves interplay of following structures except 
Select and explain. 
A. Suburethral vaginal hammock, B. Pubourethral Ligaments, C. Pubococcygeus muscle, D. Puborectalis muscle.
D: Puborectalis muscle.
Answer: D: Puborectalis muscle. 
Explanation: 3 Structures aiding in urethral closure

Pubourethral Ligament
Suburethral vaginal hammock
Pubococcygeus muscle.