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': 'Which of the following is an impoant disinfectant on account of effectively destroying gram positive and gram negative bacteria, viruses and even spores at low pH levels - \nSelect and explain. \nA. Phenol, B. Alcohol, C. Chlorine, D. Hexachlorophene', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Chlorine", 'role': 'assistant'}]