A unity feedback system has an open-loop transfer function of the from KG(s) = K(s + a); b > as2(s + b)Which of the loci system in figure can be a valid root-loci for the system?

A unity feedback system has an open-loop transfer function of the from

1.	A unity feedback system has an open-loop transfer function of the from KG(s) = K(s + a); b > as2(s + b)Which of the loci system in figure can be a valid root-loci for the system?
A.	Fig:- A
B.	Fig:- B
C.	Fig:- C
D.	Fig:- D
Answer» B. Fig:- B

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A unity feedback system has an open-loop transfer function of the from KG(s) = K(s + a); b &gt; as2(s + b)Which of the loci system in figure can be a valid root-loci for the system?

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A unity feedback system has an open-loop transfer function of the from KG(s) = K(s + a); b > as2(s + b)Which of the loci system in figure can be a valid root-loci for the system?