A

Greater bonded surface area (a higher C-factor) actually increases, not decreases, polymerization-shrinkage stress; studies show axial shrinkage rises as the number of bonded walls grows [Lee et al., 2006, PMID 16368132; Suh & Wang, 2001, PMID 11507797]. Therefore statement A is incorrect, whereas the other statements are compatible with known behavior of composite resins.