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': 'Bile acids are derived from : \nSelect and explain. \nA. Fatty acids, B. Cholesterol, C. Bilirubin, D. Proteins', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Cholesterol', 'role': 'assistant'}]