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: Biochemistry
[{'content': 'Alcohol present in ceramide is: \nSelect and explain. \nA. Glycerol, B. Sphingosine, C. Ethanol, D. Methanol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: No glycerol is present. The combination of sphingosine plus fatty acid is known as ceramide, a structure also found in the glycosphingolipids Ref: Harper 28th edition, chapter 16.', 'role': 'assistant'}]