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
Diagnostic test of extra intestinal invasive amoebiasis is - 
Select and explain. 
A. Counter immuno-electrophoresis, B. Complement fixation test, C. ELISA, D. Indirect haemagglutination test
C: ELISA
Answer: C: ELISA 
Explanation: None