Discussion
In which part of a suppressed-carrier signal does the information reside?
Answer: B
All the information is in the sidebands, which is precisely why the carrier can be discarded without loss: it is a fixed-amplitude, fixed-frequency component that conveys nothing. What it does provide is a phase reference, and removing it transfers that burden to the receiver. Splitting the information would make suppression impossible. And the envelope's mean level tells you the carrier strength rather than the message, which is why it drives the gain control and not the audio output.
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