Which one of the following statements is correct for gain margin and phase margin of two closed-loop systems having loop functions G(s) H(s) and exp(-s) G(s) H(s)?

Phase margins of the two systems are the same but gain margin of G(s) H(s) will be less

Both gain and phase margins of the two systems will be identical

Both gain and phase margins of G(s) H(s) will be more

Gain margins of the two systems are the same but phase margins of G(s) H(s) will be more

Which one of the following statements is correct for gain margin and p

1.	Which one of the following statements is correct for gain margin and phase margin of two closed-loop systems having loop functions G(s) H(s) and exp(-s) G(s) H(s)?
A.	Both gain and phase margins of the two systems will be identical
B.	Both gain and phase margins of G(s) H(s) will be more
C.	Gain margins of the two systems are the same but phase margins of G(s) H(s) will be more
D.	Phase margins of the two systems are the same but gain margin of G(s) H(s) will be less
Answer» D. Phase margins of the two systems are the same but gain margin of G(s) H(s) will be less