Which one of the following is not the property of root loci?

• A. The root locus is symmetrical about imaginary axis
• B. They start from the open loop poles and terminate at the open loop zeroes
• C. The breakaway points are determined from dK/ds = 0
• D. Segments of the real axis are the part of the root locus if and only is the total number of real poles and zeroes to their right is odd.