This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
Which of the following is not a complete sterilization 
Select and explain. 
A. Glutaraldehyde, B. Absolute alcohol, C. Hydrogen peroxide, D. Sodium hypochlorite
B: Absolute alcohol
Answer: B: Absolute alcohol 
Explanation: Pure alcohol has no power of disinfection but when diluted with water to 60-90 percent cent vol, it is a potent bactericidal, fungicidal, virucidal and tuberculocidal agent but does not destroy bacterial spores Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 141