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
Dr. J. M. Eager reported the occurrence  of  brownish  colored  stains among majority of the residents in Naples which was termed as- 
Select and explain. 
A. Denti di chiaie, B. Mottled enamel, C. Fluorosis stain, D. Colorado stain
A: Denti di chiaie
Answer: A: Denti di chiaie 
Explanation: In  1912,  McKay  found  an  article  written  by Dr. J. M. Eager in 1902  reporting the unusual occurrence  of  brownish  colored  stains among majority of the residents in Naples. Eager  had  termed  these  brownish discolorations as  "denti di chiaie".