Which Statement Is Not True Concerning Placement of the Matrix

Multiple Choice

Which statement is not true concerning placement of the matrix retainer and band?

A) The diagonal slotted surface of the retainer is always toward the gingiva.
B) The handle of the retainer extends out from the oral cavity at the corners of the lips.
C) The seated band extends two to three mm above the occlusal surface of the tooth.
D) The retainer is positioned from the buccal side of the tooth.