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: Pharmacology
Which of the following progesterone is used in emergency contraception ? 
Select and explain. 
A. Levonorgesterol, B. Micronised Progesterone, C. Norgesterone, D. Depot Medroxyprogesterone acetate
A: Levonorgesterol
Answer: A: Levonorgesterol 
Explanation: None