This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, 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: Ans. is 'b' i.e., It kills all bacteria except thermoduric bacteria (Ref: Ananthanarayan, 9th/e, p. 31, 8th/e, p. 31-32) Thermoduric bacteria - Bacteria which can survive, to varying extents, the pasteurization process.Pasteurization kills nearly 90% of bacteria in milk except certain bacteria like Coxiella burnetti which is resistant to Holders method of sterilization but killed by Flash method of Sterilization.