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
A 20 year old girl was raped around 13th day of her regular cycle. The best possible emergency conctraception to be offered would be : 
Select and explain. 
A. Centchroan tables, B. Cu-T inseion, C. Levonorgestrel tablets, D. Ethinylestradiol tablets
C: Levonorgestrel tablets
Answer: C: Levonorgestrel tablets 
Explanation: Levonorgestrel tablets