According to the Chemical Data Guide, which material is not compatible with vinylidene chloride (inhibited)?

Correct Answer: Option A — Copper or copper alloys

According to the Chemical Data Guide for Bulk Shipments by Water, vinylidene chloride (inhibited) reacts violently with copper, copper alloys, and certain other metals, forming sensitive acetylides or catalyzing dangerous polymerization. Therefore, copper-bearing materials are strictly incompatible.