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: Microbiology
Opisthorchis sinensis can cause: 
Select and explain. 
A. Cholangiocarcinoma, B. Liver carcinoma, C. Pancreatic carcinoma, D. All of the above
A: Cholangiocarcinoma
Answer: A: Cholangiocarcinoma 
Explanation: Ans. a. Cholangiocarcinoma