This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': "Hexosaminidase A deficiency causes \nSelect and explain. \nA. Tay-sach disease, B. Niemann pick disease, C. Gaucher's disease, D. Krabbe's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tay Sach&;s disease is a lipid storage disease. Due to deficiency of hexosaminidase A.GangliosideRef: DM Vasudevan, 7th edition, page no: 193', 'role': 'assistant'}]