ADA specification for orthodontic wires is
(A) 32 (B) 30 (C) 27 (D) 25
(A) 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