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
The following may be used for post - coital contraception : 
Select and explain. 
A. Cu-T, B. RU 486, C. Estrogen in high doses, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: All of the above