This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
[{'content': "Sphingomyelinase deficiency is seen in: \nSelect and explain. \nA. Niemann - Pick disease, B. Fabry's disease, C. Tay Sach's disease, D. Krabbe's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Enzyme deficient in Niemann Pick disease is Sphingomyelinase Fig: Sphingolipidoses and their enzyme deficiencies', 'role': 'assistant'}]