Digital recording and transmission often requires the signal to be transmitted using a code. Which statement would suggest an advantage of this fact?

A. Coding requires all users to have a method to decode information.
B. Coded information may require larger bandwidth to transmit.
C. Coding of the signal can keep the information secret during transport.
D. Coding may require more time to record information.

C. Coding of the signal can keep the information secret during transport.

C. Coding of the signal can keep the information secret during transport.