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1. In the FM wave described by equation v = 15 sin (4 x 108 t + 3 sin 1100 t), the carrier frequency and signal frequency respectively are
(A): 63.66 MHz and 175 Hz
(B): 4 x 108 Hz and 1100 Hz
(C): 175 Hz and 63.66 MHz
(D): 1100 Hz and 4 x 108 Hz
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