Why Is a Wooden Wedges Used in an Amalgam Restoration

Multiple Choice

Why is a wooden wedges used in an amalgam restoration?

A) It holds the matrix band in place along the gingival margin of a class II preparation.
B) It replaces the missing proximal wall or walls of a cavity preparation for a class II preparation.
C) It maintains stability of a matrix band during condensation of a restorative material for a class II preparation.
D) All of the above