This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Which among the following statements regarding disinfectants is not true - 
Select and explain. 
A. Hypochlorites are bactericidal and inactivated by organic matter, B. Gluteraldehyde 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
D: Phenol is bactericidal and readily inactivated by organic matter
Answer: D: Phenol is bactericidal and readily inactivated by organic matter 
Explanation: Phenol is a microbicidal substance which is inactivated by organic matter and thus good general disinfectant REF:Ananthanarayan & Panicker's Textbook of Microbiology 9th edition pg no:35