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: Medicine
[{'content': '"String test"  in which jejunal mucus is examined,is done for diagonos is of - \nSelect and explain. \nA. Amoebiasis, B. Stronglyoidiasis, C. Giardiasis, D. Cyclosporiasis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]