If the loop gain K of a negative feedback system having a loop transfe

1.	If the loop gain K of a negative feedback system having a loop transfer function
A.	<table><tr><td rowspan="2"> The frequency of this oscillation must be </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4</center></td><td rowspan="2"> rad / s</td></tr><tr><td style="text-align: center;"> <span style=" text-decoration: overline;">3</span></td></tr></table>
B.	The frequency of this oscillation must be must be 4 rad/s
C.	<table><tr><td rowspan="2">The frequency of this oscillation must be must be 4 or </td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4</center></td><td rowspan="2"> rad / s</td></tr><tr><td style="text-align: center;"> <span style=" text-decoration: overline;">3</span></td></tr></table>
D.	such a K does not exist
Answer» E.

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If the loop gain K of a negative feedback system having a loop transfer function

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