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1. If the oscillator output is modulated by audio frequencies upto 10 kHz, the frequency range occupied by the side bands will be
(A): 711.9 kHz to 712.1 kHz
(B): 702 kHz to 722 kHz
(C): 692 kHz to 732 kHz
(D): 71.2 kHz to 71.20 kHz
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