The open loop transfer functions with unity feedback are given below for different systems.Among these systems the unstable system is

The open loop transfer functions with unity feedback are given below f

1.	The open loop transfer functions with unity feedback are given below for different systems.Among these systems the unstable system is
A.	G(s) =2/s+2
B.	G(s) =2/s(s+2)
C.	G(s) =2/(s+2)s^2
D.	G(s) =2(s+1)/s(s+2)
Answer» D. G(s) =2(s+1)/s(s+2)