NEVER load corrosive liquids (Class 8) above which of the following?

A explosives C, flammable solids, or oxidizers.

explanation

Never load corrosive liquids next to or above:
Division 1.4 (Explosives C).
Division 4.1 (Flammable Solids).
Division 4.3 (Dangerous When Wet).
Class 5 (Oxidizers).
Division 2.3, Zone B (Poisonous Gases). [Commercial Driver License Manual]