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
Pasteurized milk is most commonly tested by 
Select and explain. 
A. Phosphatase test, B. Standard plate count, C. Coliform Count, D. Holder method
A: Phosphatase test
Answer: A: Phosphatase test 
Explanation: Phosphatase test - widely used test.