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
[{'content': 'An example of high level disinfectant is \nSelect and explain. \nA. Phenol, B. Glutaraldehyde, C. Alcohol, D. Povidone Iodine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]