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: Social & Preventive Medicine
Confirmatory Test for coliform count 
Select and explain. 
A. Eijkman test, B. Casoni’s test, C. Nitrate test, D. Urease test
A: Eijkman test
Answer: A: Eijkman test 
Explanation: None