【单选题】The development of optical fiber over the last twenty years has resulted in the production of optical fiber cables that exhibit very low attenuation and transmission loss in comparison with the best c...
A.
cause very small reduction in the power of signals traveling over them
B.
make very severe enhancement resulting in loss of transmission
C.
show very weak coupling and infrequent transmission failure
D.
attract very little attention so as to cause transmission degradatio