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': 'Deficiency of enzyme in Tay-Sach disease ? \nSelect and explain. \nA. Galactosidase, B. Hexosaminidase, C. Acid lipase, D. Glucosidase', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Hexosaminidase", 'role': 'assistant'}]