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
[{'content': 'Folic acid is given during which trimester of pregnancy September 2010, March 2013 \nSelect and explain. \nA. First, B. Second, C. Third, D. Throughout pregnancy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: First', 'role': 'assistant'}]