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: Surgery
[{'content': '50 year old patient comes with jaundice. She has undergone cholecystectomy 3 years back. MRCP reveals choledocholithiasis. What might be the cause \nSelect and explain. \nA. Ascaris lumbricoides, B. Clinorchis sinesis, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Any obstruction or infection of the bile leads to do choledocholithiasis. Common organisms include ascaris lumbricoides and clonorchis sinensis.', 'role': 'assistant'}]