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': 'Which among the following is primary bile acid? \nSelect and explain. \nA. Deoxycholic acid, B. Lithocholic acid, C. Chenodeoxycholic acid, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Chenodeoxycholic acid and cholic acid are the primary bile acids.\nDeoxycholic acid and Lithocholic acid are the secondary bile acids.', 'role': 'assistant'}]