Best option: D

Reasoning: Auto-cured (chemically cured) core-build-up composites are supplied as flowable, low-viscosity materials that can be injected in bulk so they readily adapt and flow around pins or posts in a molar, whereas light-cured composites are thicker and must be packed in increments; their strength, opacity and brittleness are comparable to self-cured versions, so those factors are not the limiting issue [Tauböck et al., 2011, PMID 21804062; Dimitriadi et al., 2021, PMID 34375795].