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: Microbiology
Which of the following is true about pasteurization 
Select and explain. 
A. It kills all bacteria and spores, B. It kills all bacteria except thermoduric bacteria, C. It kills 95% of microorganisms, D. All bacteria are destroyed
B: It kills all bacteria except thermoduric bacteria
Answer: B: It kills all bacteria except thermoduric bacteria 
Explanation: Pasteurization 

Is a method for sterilization of milk.
It is defined as the heating of every particle of milk or milk product to a specific temperature for a specific period of time without allowing recontamination of that milk or milk product.
Two methods are commonly used.-


Holder method → 63°c for 30 minutes.
Flash method → 72°c for 15-20 seconds

"Pasteurization kills nearly 90% of the bacteria in milk including the more heat resistant tubercle bacillus and the fever organisms. But it will not kill thermoduric bacteria nor the bacterial spores." - PSM Park 19th/e