The Nyquist plot of a stable, transfer function G(s) is shown in the f – McqOptions

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1.	The Nyquist plot of a stable, transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration shown.Which of the following statements is true?
A.	G(s) is an all-pass filter
B.	G(s) has a zero in the right-half plane
C.	G(s) is the impedance of a passive network
D.	G(s) is marginally stable
Answer» D. G(s) is marginally stable

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