Given the task definition and input, reply with output. In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Fact1: wiring requires an electrical conductor, Fact2: Most electrical conductors, such as wires, are made of copper or gold., Question: Wiring requires a material such as copper or what? (A) stainless steel (B) energy (C) gold (D) fibers (E) LEDs (F) tube (G) wood (H) rubber

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
C