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
Dental Aesthetic Index (DAI) was developed by: 
Select and explain. 
A. Naham C. Cons, Joanna Jenny, and Frank J. Kohout, B. Harry Draker, C. Grainger R.M., D. R.R. Lobene, T. Weather-ford, N.M. Ross, R.A. Lamm, and L. Menaker
A: Naham C. Cons, Joanna Jenny, and Frank J. Kohout
Answer: A: Naham C. Cons, Joanna Jenny, and Frank J. Kohout 
Explanation: DENTAL AESTHETIC INDEX (DAI):
The Dental Aesthetic Index (DAI) was developed by Naham C. Cons, Joanna Jenny, and Frank J. Kohout in 1986 to assess orthodontic treatment need. It is an orthodontic index based on socially deﬁned aesthetic norms.
Orthodontics: Diagnosis of & Management of Malocclusion & Dentofacial Deformities
O.P. Kharbhanda  second edition