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: Social & Preventive Medicine
The most common side effect of IUD inseion is - 
Select and explain. 
A. Bleeding, B. Pain, C. Pelvic, D. Ectopic pregnancy
A: Bleeding
Answer: A: Bleeding 
Explanation: Ans. is 'a' i.e., Bleeding o Most common side effect --> Bleeding o Most common side effect requiring removal of the device --> Pain