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
High affinity Oestrogen receptors are found frequently in following except 
Select and explain. 
A. Urethra, B. Bladder trigone, C. Pubococcygeal muscle, D. Ureter.
D: Ureter.
Answer: D: Ureter. 
Explanation: Estrogen receptor in urinary tract are found frequently in:

Bladder trigone
Urethra.

and also in pubococcygeus muscle.