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
All are postcoital contraceptives except : 
Select and explain. 
A. IUD, B. Danazol, C. High dose estrogen, D. Medroxy progesterone acetate
D: Medroxy progesterone acetate
Answer: D: Medroxy progesterone acetate 
Explanation: Medroxy progesterone acetate