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
The following tests are used to check the efficiency of pasteurization of milk except 
Select and explain. 
A. Phosphatase test, B. Methylene blue reduction test, C. Standard plate count, D. Coliform count
B: Methylene blue reduction test
Answer: B: Methylene blue reduction test 
Explanation: • Methylene Blue Reduction Test' (MBRT): Is an indirect method for detection of microorganisms in milk – MBRT test is 'carried out on milk accepted for pasteurization'
• 'Cold Pasteurization': The use of ionizing radiation or other means (e.g. chemical) to kill bacteria in food.
• 'Electronic pasteurization': Food irradiation