Which of the following is classified as a grade "E" combustible liquid?

Correct Answer: Option B — Bunker "C"

46 CFR 30.10-22 classifies combustible liquids by flashpoint. Grade E liquids have a flashpoint of 150°F or higher. Bunker C, a heavy residual fuel oil, consistently exceeds this threshold, placing it firmly in the Grade E category, unlike volatile distillates like gasoline or benzene which are flammable.