The characteristic equation of a control system is given bys(s + 4) (s + 5) (s + 6) + K(s + 3) = 0The number of asymptotes and the centroid of asymptotes of this control system are

• A. 2 and (4, 0)
• B. – 3 and (-4, 0)
• C. – 3 and (-12, 0)
• D. 3 and (-4, 0)