"Optical fiber communication" refers to ( )
A.
A communication mode in which radio waves are used as carriers and optical fibers are used as transmission media.
B.
A communication mode in which optical waves are used as carriers and optical fibers are used as transmission media.
C.
A communication mode in which optical waves are used as carriers and cables are used as transmission media.
D.
A communication mode in which laser is used as carriers and optical fibers are used as transmission media.