Macie Has Staining and Pitting of Her Teeth

Multiple Choice

Macie has staining and pitting of her teeth. She drinks three glasses of milk per day and enjoys yogurt as a snack. She lives in an urban area of the United States and regularly brushes her teeth and rinses afterward with a cavity-fighting solution. The cause of the stains and pits in her teeth are most likely caused by:

A) excessive copper.
B) inadequate iron.
C) excessive calcium.
D) inadequate fluoride.
E) excessive fluoride.