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: Physiology
[{'content': 'What is the daily requirement of zinc in humans ? \nSelect and explain. \nA. 8 mg/day, B. 9.4 mg/day, C. 11 mg/day, D. 15 mg/day', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Daily requirement of Zinc for adult men is 9.4mg/d and for women is 6.8mg/d. RDA for zinc in males and females are 11mg and 8mg. RDA for Zinc during pregnancy is 11mg/d Zinc recommendation for lactating women is 12mg/d. Features of zinc deficiency in children are growth retardation, skeletal abnormalities, poor wound healing, diarrhea, skin rash and delayed sexual maturation. Ref: Advanced Nutrition and Human Metabolism By Sareen S. Gropper, Page 509', 'role': 'assistant'}]