This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Micronutrient Mineral Deficiencies, 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 o Keshan diseaseCardiomyopathy associated with selenium deficiency,o Wilson diseaseAutosomal recessive.Defective metabolism of copper leads to copper toxicity.Deficiency of ceruloplasmin.Presence of KF ring in cornea,o Acrodermatitis enteropathicaDeficiency of zinc.Dermatitis of extremities & around orifices.", 'role': 'assistant'}]