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PreviousCompare Pulse Amplitude Modulation (PAM), Pulse Position Modulation (PPM) and Pulse Code Modulation (PCM) with their applications.NextA carrier signal c(t) = 10cos(2π x 10^6t) is amplitude modulated by a message signal m(t)= 5 cos(2πx10^3t). Determine the modulation index and sketch the frequency spectrum.