Quadrature Amplitude Modulation means changing both:
(A) Frequency and phase of the carrier.
(B) Frequency and Amplitude of the carrier.
(C) Amplitude and phase of the carrier.
(D) Amplitude and Wavelength of the carrier.
Answer: (C)
Explanation: Quadrature Amplitude Modulation means changing both amplitude and phase of the carrie.
So, option (C) is correct.
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