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
A patient presents to you with the features of biliary obstruction. He gives history of the consumption of fish while on the trip. Which of the following is most probable etiology 
Select and explain. 
A. Clonorchis sinensis, B. Ancylostoma, C. Strongyloides, D. Enterobius
A: Clonorchis sinensis
Answer: A: Clonorchis sinensis 
Explanation: Ans. a. Clonorchis sinensis