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
ADA specification for orthodontic wires is 
Select and explain. 
A. 32, B. 30, C. 27, D. 25
A: 32
Answer: A: 32 
Explanation: 26 - Dental X-ray Equipment 
27 - Resin-Based Filling Materials (Direct filling materials) 
28 - Endodontic Files and Reamers (Hand Use) 
30 - Dental Zinc Oxide Eugenol and Zinc Oxide Non-Eugenol Cements 
31 - Exposure time designation for timers of dental X-ray machines
32 - Orthodontic Wires
33 - Dental Terminology / Vocabulary