Which statement correctly maps a code to its material?

• A. FM equals Plastic
• B. FO equals Fiber Optic
• C. PVC equals Reinforced Concrete
• D. RFC equals Terra Cotta

Answer: (B)

When you see codes used to identify underground facilities, they’re shorthand for the material or type of utility. The code that maps to Fiber Optic is FO, which is the standard shorthand for fiber optic cables in many marking guides. That makes FO equal Fiber Optic the correct match because fiber optic cables are a distinct category from plastics or concrete.

The other options mix up materials: PVC is a plastic (Polyvinyl Chloride), not reinforced concrete; RFC stands for Reinforced Concrete, not Terra Cotta; and FM isn’t a recognized standard code for Plastic in common schemes. So the only accurate mapping here is FO equaling Fiber Optic.