Consider the systems with following open loop transfer functions. If unity feedback is used, the increasing order of time taken for unit step response to settle is

Consider the systems with following open loop transfer functions. If u

1.	Consider the systems with following open loop transfer functions. If unity feedback is used, the increasing order of time taken for unit step response to settle is
A.	1, 2, 3
B.	3, 1, 2
C.	2, 3, 1
D.	3, 2, 1
Answer» D. 3, 2, 1