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
Which of the following tests is performed to assess the efficiency of pasteurization? 
Select and explain. 
A. Phosphatase Test, B. Oxidase Test, C. Catalase Test, D. Methylene Blue Test
A: Phosphatase Test
Answer: A: Phosphatase Test 
Explanation: Phosphatase test is a widely used test to check the efficiency of pasteurized milk. Ref: Preventive and Social Medicine, By K.Park, 19th edition, Page 522; Laboratory Diagnosis of Infectious Diseases: Essentials of Diagnostic Microbiology, By Paul G. Engelkirk, Janet Duben-Engelkirk, 2008 Lippincott Williams & Wilkins, Page 215, 216, 277.