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
All are Phenolic disinfectant except- 
Select and explain. 
A. Dettol, B. Cresol, C. Lysol, D. Carbolic acid
A: Dettol
Answer: A: Dettol 
Explanation: Phenol (carbolic acid) is a powerful microbicidal substance. This and other phenolic disinfectant derived from coal tar are widely used as a disinfectant for various purposes in hospitals. Lysol and Cresol are active against a wide range of organisms. They are not readily inactivated by the presence of organic matter and are a good general disinfectant. These are toxic to humans REF:Ananthanarayan and Panicker's Textbook ofMicrobiology 8thEdition pg no:37