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': 'Daily required dose of iron in an adult man is: March 2005 \nSelect and explain. \nA. 0.7 mg, B. 0.8 mg, C. 0.9 mg, D. 1.0 mg', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: 0.9 mg Requirement of iron: 0.7 mg is requirement for infants (5-12 months) and post-menopausal woman 0.8 mg is required for first half of pregnancy 0.9 mg is the amount required by an adult male 1.0 mg is required by children (1-12 years)', 'role': 'assistant'}]