Which of the following statements is true about the twisted-pair cables?
A They don't need EMI shielding, but cables for outdoor use need more physical protection than those used indoors.
B Large cables often have a central strength member, with the fibers themselves placed around them.
C Each balanced pair is warped around itself for the cable's length, so even a nearby source, such as a parallel cable, will, on average, balance out.
D Instead of an electrical circuit confining the radio signal within a copper cable, light from a laser or LED shines down a hair-thin and highly purified glass fiber.
