Consider the following statements about roots locus:1. The root locus is symmetrical about real axis.2. If a root locus branch moves along the real axis from an open-loop pole to zero or to infinity, this root locus branch is called real root branch.3. The breakaway points of the root locus are the solutions of \(\frac{{dK}}{{ds}} = 0\)Which of the above statements are correct?

Consider the following statements about roots locus:1. The root locus

1.	Consider the following statements about roots locus:1. The root locus is symmetrical about real axis.2. If a root locus branch moves along the real axis from an open-loop pole to zero or to infinity, this root locus branch is called real root branch.3. The breakaway points of the root locus are the solutions of \(\frac{{dK}}{{ds}} = 0\)Which of the above statements are correct?
A.	1 and 2 only
B.	1 and 3 only
C.	2 and 3 only
D.	1, 2 and 3
Answer» E.

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