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
[{'content': 'The most common side effect of IUD inseion is - \nSelect and explain. \nA. Bleeding, B. Pain, C. Pelvic, D. Ectopic pregnancy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Bleeding o Most common side effect --> Bleeding o Most common side effect requiring removal of the device --> Pain", 'role': 'assistant'}]