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
Investigation of choice for invasive amebiasis is - 
Select and explain. 
A. Indirect heamagglutination, B. ELISA, C. Counter immune electrophoresis, D. Microscopy
B: ELISA
Answer: B: ELISA 
Explanation: None