Which one of the following statements about the growth of the mandible is correct?
(A)The mental symphysis closes at about 1 year postnatally (B)The condylar growth cartilage ceases activity at puberty (C)The ossification centre appears about 8 weeks I.U.L medial to Meckel's cartilage (D)The functional matrix acting on the angle of the mandible is the lateral pterygoid muscle
A