The root locus for K < 0 for the transfer function expressed by G(s) H

1.	The root locus for K < 0 for the transfer function expressed by G(s) H(s) = K s(s + 1)(s + 3)(s + 4)
A.	<img src="http://images.interviewmania.com/wp-content/uploads/2019/11/as-916.jpg">
B.	<img src="http://images.interviewmania.com/wp-content/uploads/2019/11/as-917.jpg">
C.	<img src="http://images.interviewmania.com/wp-content/uploads/2019/11/as-918.jpg">
D.	none of these
Answer» C. <img src="http://images.interviewmania.com/wp-content/uploads/2019/11/as-918.jpg">

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The root locus for K &lt; 0 for the transfer function expressed by G(s) H(s) = K s(s + 1)(s + 3)(s + 4)

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The root locus for K < 0 for the transfer function expressed by G(s) H(s) = K s(s + 1)(s + 3)(s + 4)