For type 2 system, the magnitude and phase angle of the term (jω)2 in the denominator, at ω = 0, are respectively

For type 2 system, the magnitude and phase angle of the term (jω)2 in

1.	For type 2 system, the magnitude and phase angle of the term (jω)2 in the denominator, at ω = 0, are respectively
A.	0 and - 90°
B.	0 and + 90°
C.	infinity and - 180°
D.	infinity and + 180°
Answer» D. infinity and + 180°