Use Case B to Answer the Following Questions

Use Case B to answer The Following questions
CASE BPermanent Dentition
An adult female client new to the dental practice expresses an interest in orthodontic treatment. The client has a moderate caries risk and a tongue thrust swallowing pattern. Three carious lesions on the proximal surfaces are recorded during the dental examination, and the client admits that she does not floss. She informs the hygienist that she has "a sore spot on the left side of her mouth" that hurts when she eats. Use Case B and Figures 5-29 and 5-30 to answer questions 13-20.
-All of the following are characteristics of primary teeth EXCEPT one. Which one is the EXCEPTION?

A) Primary teeth have pronounced buccocervical ridges that constrict at the CEJ
B) Primary occlusal tables are narrower faciolingually than are permanent occlusal tables
C) The primary enamel depth is thicker at cusp tips and thinner at the CEJ than permanent tooth enamel
D) Pulp chambers are larger and pulp horns extend more occlusally than permanent tooth pulps