Which option lists the items included in Gypsum Wallboard installation?

• A. Drywall screws; tapered edges; spackle; tape
• B. Drywall screws; tapered edges; spackle; tape; fiberglass corner beads
• C. Drywall screws; rounded edges; joint compound; tape; plastic corner beads
• D. Drywall screws; tapered edges; spackle; tape; galvanized steel corner beads + spackle

Answer: (D)

The question tests what materials are standard for finishing gypsum wallboard installations. A proper install uses drywall screws to fasten the boards, panels with tapered edges to create flush joints, joint compound (spackle) to fill seams, tape to reinforce those seams, and corner protection at exterior angles. Galvanized steel corner beads are the common choice for reinforcing and finishing these corners, with spackle applied over them for a smooth finish. Fiberglass or plastic corner beads exist, but galvanized steel is the typical standard in traditional gypsum wallboard work, and edges are tapered, not rounded. So the option that lists drywall screws, tapered edges, spackle, tape, and galvanized steel corner beads (plus spackle) aligns with standard practice.