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: Pharmacology
Zero order kinetics is seen with 
Select and explain. 
A. Phenytoin, B. Phenabarbtion, C. Phenabarbtion, D. Digoxin
A: Phenytoin
Answer: A: Phenytoin 
Explanation: None