Which is a reason to use digital signals instead of analog signals to transmit information?

A. Noise decreases the loudness of analog signals but does not

affect the loudness of digital signals.

B. The waves used to transmit analog signals are more dangerous

than the waves used to transmit digital signals.

C. Noise changes the quality of analog signals but does not affect

the reliability of digital signals.

D. The waves used to transmit analog signals require more energy

than the waves used to transmit digital signals.