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: Skin
Dose of zinc used in acrodermatitis enteropathica is? 
Select and explain. 
A. 0.5mg/kg, B. 2mg/kg, C. 5mg/kg, D. 7mg/kg
B: 2mg/kg
Answer: B: 2mg/kg 
Explanation: Dose of zinc for acrodermatitis enteropathica is 2-3 mg/kg body weight