单选题A 100 pair cable is typically used to connect：（）Atelephony distribution.Bbusinesses with more than 75 computers.Csecurity cameras.Dcomputer labs with more than 20 computers.
单选题
A 100 pair cable is typically used to connect：（）
A
telephony distribution.
B
businesses with more than 75 computers.
C
security cameras.
D
computer labs with more than 20 computers.
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解析：
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