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: Biochemistry
True about revesible non-competetive inhibitorsa) Lower Vmaxb) Lower Kmc) Not affect Kmd) Not affect Vmaxe) Affect both V max & Km 
Select and explain. 
A. a, B. ac, C. ad, D. b
B: ac
Answer: B: ac 
Explanation: None