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
Elimination after 4 half lives in first order kinetic is: 
Select and explain. 
A. 84%, B. 93%, C. 80.50%, D. 75%
B: 93%
Answer: B: 93% 
Explanation: None