The transfer function G (s) is Ks2(1 + sT). This open-loop

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The transfer function G (s) is
K
s²(1 + sT)
. This open-loop system will be—

1. stable
2. unstable
3. marginally stable
4. conditionally stable

Correct Option: A

C.E. of the given O.L.T.F. ⇒ 1 + G (s) = 0

⇒ 1 +	K	= 0
	s²(1 + sT)

⇒ s² + s³T + K = 0
⇒ s³ T + s² + K = 0
system is unstable since there is missing terms of s¹.