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.
-When comparing the maxillary first premolar and the maxillary second premolar, all of the following statements are true EXCEPT one. Which one is the EXCEPTION?

A) Both have a long central developmental groove
B) Both have a transverse ridge
C) The first premolar has a mesial crown concavity, but the second premolar does not
D) The first premolar cusps are longer than lingual cusps, but the second premolar cusps are more equal in length