Which of the following is true about pasteurization
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
It kills all bacteria and spores
It kills all bacteria except thermoduric bacteria
It kills 95% of microorganisms
All bacteria are destroyed