X(t) is a stationary process with the power spectral density Sx(f) > 0 – McqOptions

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1.	X(t) is a stationary process with the power spectral density Sx(f) > 0 for all f. The process is passed through a system shown below.Let Sy, (f) be the power spectral density Y(t). Which one of the following statements is correct?
A.	Sy(f) > 0 for all f
B.	Sy(f) = 0 for \|f\| > 1kHz
C.	Sy(f) = 0 for f = nf0, f0 = 2kHz, n any integer
D.	Sy(f) = 0 for f = (2n + 1)f0 = 1 kHz, n any integer
Answer» E.

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