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
IUCD acts as contraceptive through all of the following mechanisms, except : 
Select and explain. 
A. Impairs implantation of blastocyst, B. Increases tubal motility, C. Inhibits ovulation, D. Releases prostaglandins
C: Inhibits ovulation
Answer: C: Inhibits ovulation 
Explanation: Inhibits ovulation