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
Acrodermatitis enteropathica is due to deficiency of 
Select and explain. 
A. Zinc, B. Vitamin B3, C. Calcium, D. Vitamin B6
A: Zinc
Answer: A: Zinc 
Explanation: None