What best practice will help avoid this problem?

You have configured your Cisco TelePresence Codec C90 but discover unwanted noise during use. What best practice will help avoid this problem?
A. Connect only one device at a time to an input and avoid daisy-chaining.
B. Recycle the power on your system after adding each additional input.
C. If you are not using an input, turn it off.
D. Daisy-chain additional devices using a serial cable to provide separate power supplies.

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