New service from the telephone company is delivered over fiber, but the technician does not have a fiber module for the router. Which of the following would remedy this issue?()

题目
New service from the telephone company is delivered over fiber, but the technician does not have a fiber module for the router. Which of the following would remedy this issue?()

A. OTDR

B. Media converter

C. CSU/DSU

D. Fiber repeater