正解:B
The correct answer is 1000BASE-T. This standard is part of the Ethernet technologies and uses four pairs of Category 5 or higher copper cables. It's designed to support networks at Gigabit Ethernet speeds up to 1000 Mbps (1 Gbps) over distances up to 100 meters. Unlike the other options listed, which pertain to fiber optic cable standards (1000BASE-FX, 1000BASE-LR, and 1000BASE-SX), 1000BASE-T is the only one utilizing copper wiring, making it the suitable choice for this question.