单选题RG-6 coaxial cable is typically used in all of the following applications：（）Amulti-room audio， telephone， intercom and temperature control.Bthermostat， CCTV， smoke detectors and keypads.Chome theater， lighting control and multi-room audio.Dvideo， digital cable， and satellite applications.
单选题
RG-6 coaxial cable is typically used in all of the following applications：（）
A
multi-room audio， telephone， intercom and temperature control.
B
thermostat， CCTV， smoke detectors and keypads.
C
home theater， lighting control and multi-room audio.
D
video， digital cable， and satellite applications.
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