The Nyquist plot of a loop transfer function G(jω) H(jω) of a system encloses the (-1, j0) point. The gain margin of the system is

The Nyquist plot of a loop transfer function G(jω) H(jω) of a system

1.	The Nyquist plot of a loop transfer function G(jω) H(jω) of a system encloses the (-1, j0) point. The gain margin of the system is
A.	less than zero
B.	zero
C.	greater than zero
D.	infinity
Answer» B. zero