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
Temperature of glass bead sterilizer is 
Select and explain. 
A. 425°F-475°F for 5 secs, B. 475°F-525°F for 5 secs, C. 425°F-475°F for 10 secs, D. 475°F-525°F for 10 secs
A: 425°F-475°F for 5 secs
Answer: A: 425°F-475°F for 5 secs 
Explanation: Glass bead (hot salt) sterilizers used to consist of either hot salt or glass beads as a medium for dry heat sterilization. 
The temperature range employed was between 425°F (218°C) and 475°F (246°C) for 5 seconds.
Ref :Grossman’s endodontics, 13th edition , pg no:198