Which one of the following morphological characteristic is representative of all posterior maxillary teeth?
From MD aspect, all posterior teeth have a trapezoidal outline with shortest uneven side toward the occlusal surface.
A, Present posteriorily on first premolar;
B, Exceptions may be the DB root of the maxillary second molar;
C, From mesial and distal aspect, all posterior mandibular teeth, not maxillary posterior teeth, have a rhomboidal outline