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: Pathology
[{'content': 'Nesidioblastoma is due to hyperplasia of? \nSelect and explain. \nA. Alpha cell, B. Beta cell, C. Acinus, D. D cells', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Beta cell Nesidioblastoma is due to hyperplasia of B cell of panceatic islets.", 'role': 'assistant'}]