This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: obstetrics,pediatrics and geriatrics, Subject name: Social & Preventive Medicine
[{'content': 'Dose of iron and folic acid in pregrnancy is - \nSelect and explain. \nA. 20 mg iron and 100 mcg FA, B. 30 mg iron and 250 mcg FA, C. 100 mg iron and 500 mcg FA, D. 100 mg iron and 100 mcg FA', 'role': 'user'}, {'content': "Answer: C \nExplanation: During pregnancy, 100 mg iron and 500 mcg FA should be given. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 594", 'role': 'assistant'}]