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 Kinetics is 
Select and explain. 
A. 84%, B. 93%, C. 80.50%, D. 4.75%
B: 93%
Answer: B: 93% 
Explanation: Ans. is 'b' i.e., 93% Half life Elimination 1t%2 50% 2t'/2 75% 3 0/2 87.5% 41 93.75% 5 t'/ 96.875