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
Which of the following is false about cholangiocarcinoma 
Select and explain. 
A. Investigation of choices MRCP, B. Staging is done by PET CT, C. Diagnosis is done by CECT, D. Choledochal cyst is a risk factor.
B: Staging is done by PET CT
Answer: B: Staging is done by PET CT 
Explanation: Diagnosis is made by MRCP