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.
题目
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.