As the angle of the eminentia increases, the:

As the angle of the eminentia increases, the:
A . Lingual concavity of a maxillary anterior restoration should increase.
B . Lingual concavity of a maxillary anterior restoration should remain the same.
C . Cusp length of a posterior restoration may increase.
D . Cusp length of a posterior restoration should remain the same.

Answer: C