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: Dental
While using EDTA and NaOCl what should be the sequence of irrigation i) Normal Saline II) NaOCl iii) EDTA 
Select and explain. 
A. i>ii>iii, B. ii>i>iii, C. iii>i>ii, D. iii>ii>i
B: ii>i>iii
Answer: B: ii>i>iii 
Explanation: None