A unity feedback system with open-loop transfer function G (s) = 4/[s(s+p)] is critically damped. The value of the parameter p is

A unity feedback system with open-loop transfer function G (s) = 4/[s(

1.	A unity feedback system with open-loop transfer function G (s) = 4/[s(s+p)] is critically damped. The value of the parameter p is
A.	4
B.	3
C.	2
D.	1
Answer» B. 3