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
Who introduced Sodium Hypochlorite(with concentration) in Endodontics 
Select and explain. 
A. Melton (0.5% to 5%), B. Melton (1% to 5%), C. Coolidge (0.5% to 5%), D. Coolidge (0.5% to 2.5%)
C: Coolidge (0.5% to 5%)
Answer: C: Coolidge (0.5% to 5%) 
Explanation: None