Three signals related to amplitude modulation are shown in the figure. The correct assignment of the signals is

  • A
    Signal $A$: Information message,Signal $B$: Amplitude modulation
  • B
    Signal $A$: Information message,Signal $C$: Amplitude modulation
  • C
    Signal $B$: Carrier wave,Signal $C$: Information message
  • D
    Signal $B$: Information message,Signal $C$: Amplitude modulation

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