This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': "Investigation of choice for choledochal cyst is \nSelect and explain. \nA. Graham chole's test, B. MRCP, C. ERCP, D. USG", 'role': 'user'}, {'content': "Answer: B \nExplanation: The investigation of choice for Choledochal cyst is MRCP-to see the status of pancreatic & biliary system and pancreaticobiliary maljunction. Reference:SRB's manual of surgery,5th edition,page no:638.", 'role': 'assistant'}]