In the Following Illustration,structure "A" Refers to a Fossa,which Is

Multiple Choice

In the following illustration,structure "a" refers to a fossa,which is a convexity or bulge on a tooth.Structure "b" refers to a ridge,which is a concavity or depression within a tooth.

A) Both statements are true.
B) The first statement is true;the second statement is false.
C) The first statement is false;the second statement is true.
D) Both statement are false.