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
"String test"  in which jejunal mucus is examined,is done for diagonos is of - 
Select and explain. 
A. Amoebiasis, B. Stronglyoidiasis, C. Giardiasis, D. Cyclosporiasis
C: Giardiasis
Answer: C: Giardiasis 
Explanation: None