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
[{'content': 'Which of the following statements regarding disinfectant is not true? \nSelect and explain. \nA. Hypochlorites are bactericidal and inactivated by organic matter, B. Glutaraldehyde is sporicidal and not inactivated by organic matter, C. Formaldehyde is bactericidal, sporicidal and virucidal, D. Phenol is bactericidal and readily inactivated by organic matter', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Phenol is bactericidal and readily inactivated by organic matterPhenolic act by denaturing proteins and disrupting cell membranes and effective in the presence of organic materials.", 'role': 'assistant'}]