The diagram illustrates four distinct kinds of teeth in the upper and lower jaws of a human mouth. Which letters identify the types of teeth shown in the diagram?
- AW canine, X premolar, Y molar, Z incisor
- BW canine, X molar, Y premolar, Z incisor
- CW incisor, X premolar, Y molar, Z canine
- DW incisor, X molar, Y premolar, Z canine