The phase margin (in degrees) of a system having the loop transfer function G(s) H(s)=2‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇ3/s(s+1) is:

The phase margin (in degrees) of a system having the loop transfer fun

1.	The phase margin (in degrees) of a system having the loop transfer function G(s) H(s)=2‚Äö√Ñ√∂‚àö‚Ä†‚àö‚àÇ3/s(s+1) is:
A.	45¬¨¬®‚Äö√†√ª
B.	-30¬¨¬®‚Äö√†√ª
C.	60¬¨¬®‚Äö√†√ª
D.	30¬¨¬®‚Äö√†√ª
Answer» E.