A signal containing only two frequency components (3 kHz and 6...

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A signal containing only two frequency components (3 kHz and 6 kHz) is sampled at the rate of 8 kHz, and then passed through a low pass filter with a cut-off frequency of 8 kHz. The filter output

A. Is an undistorted version of the original signal

B. Contains only the 3 kHz component

C. Contains the 3 kHz component and a spurious component of 2 kHz

D. Contains both the components of the original signal and two spurious components of 2 kHz and 5 kHz

Answer: Option D

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