Which three of these are characteristics of UTP cable？（）
A. The wires in each pair are wrapped around each other
B. An insulating material covers each of the individual copper wires in it
C. It comes in eight-pair wire bindles
D. EMI and RFI cause only limited degradation to signals running over it
E. It comes in seven categories
F. IT has an external diameter of approximately 0 28 inche
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