$A$ carrier wave of frequency $1000 \text{ kHz}$ is modulated by an audio signal of frequency $800 \text{ Hz}$. What are the frequencies of the first pair of sidebands?
- A$1000 \text{ kHz}$ and $800 \text{ Hz}$
- B$800 \text{ Hz}$ and $999.2 \text{ kHz}$
- C$1000.8 \text{ kHz}$ and $999.2 \text{ kHz}$
- D$1000.8 \text{ kHz}$ and $1000 \text{ kHz}$
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