Which of the Following Statements Is True of Polymerization Shrinkage

Which of the following statements is true of polymerization shrinkage of composite restorative materials?

A) Microfilled composites shrink less than microhybrid composites, because microhybrid composites have less resin.
B) Stresses from polymerization shrinkage cannot exceed the bond strength of a composite to tooth structure.
C) Incremental addition and polymerization of composite in layers will reduce the effective shrinkage.
D) Bulk addition of composite will reduce the effective shrinkage.