If G(s)H(s) = K/s(s+1)(s²+4s+20), the number of branches of root locu

1.	If G(s)H(s) = K/s(s+1)(s²+4s+20), the number of branches of root locus are
A.	1
B.	2
C.	3
D.	4
Answer» E.

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