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: Pediatrics
[{'content': 'Keshan disease in due to deficiency of \nSelect and explain. \nA. Selenium, B. Copper, C. Zinc, D. Iron', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Selenium Keshan disease Cardiomyopathy associated with selenium deficiency. Wilson disease Autosomal recessive. Defective metabolism of copper leads to copper toxicity. Deficiency of ceruloplasmin. Presence of KF ring in cornea. Acrodermatitis enteropathica Deficiency of zinc. Dermatitis of extremities & around orifices.", 'role': 'assistant'}]