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
All are true regarding disinfectants except -a) Gluteraldehyde is sporicidalb) Hypochlorites are virucidalc) Ethylene oxide is intermediate disinfectantd) Phenol usually requires oganic matter to act 
Select and explain. 
A. cd, B. bc, C. bd, D. ac
A: cd
Answer: A: cd 
Explanation: None