This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Gynae), Subject name: Gynaecology & Obstetrics
[{'content': 'Demand of fetus for iron is evident after_____ weeks \nSelect and explain. \nA. 10, B. 20, C. 25, D. 30', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c (25 weeks) (Ref. Nelson Textbook of Pediatrics 17th/pg. 545)IRON REQUIREMENT IN PREGNANCY# Mineral supplementation is not needed in healthy women.- The exception is iron.# The iron requirements of pregnancy are total about 1 gram.# Demand of fetus for iron is evident in last 12 weeks of pregnancy.', 'role': 'assistant'}]