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: Pathology
Each quadrant of the adult mouth holds ___ incisors, ___ canines, ___ premolars, and ___ molars. 
Select and explain. 
A. 1, 2, 3, 2, B. 1, 2, 2, 3, C. 2, 1, 3, 2, D. 2, 1, 2, 3
D: 2, 1, 2, 3
Answer: D: 2, 1, 2, 3 
Explanation: D: There are 32 teeth in the normal adult mouth, located in the mandible and maxillae.
The teeth can be divided into quadrants: right upper, left upper, right lower, and left lower. In adults, each quadrant contains one central and one lateral incisor; one canine; first and second premolars; and first, second, and third molars.