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
Using stopko tip irrigation which of these is used cleaning and drying of pulp chamber: 
Select and explain. 
A. 5.25% NaOCl + 17% EDTA, B. 95% alcohol+17% EDTA, C. 5.25 NaOCl+17% CHX, D. 95% ethanol + 17% EDTA
D: 95% ethanol + 17% EDTA
Answer: D: 95% ethanol + 17% EDTA 
Explanation: Direct lines from book "warming of NaOCI to 122° F
(50' C) leads to increase in collagen dissolution
as potential to disinfecting, but it can leads to
detrimental corrosion effects on NiTi instruments
immersion for 1 hr".