Which among the below mentioned cases are responsible for generating the oscillations with increasing amplitude in time domain response of system function?A. Complex poles with positive real partB. Complex poles with negative real partC. Repeated poles on imaginary axisD. Repeated poles on real axis

Which among the below mentioned cases are responsible for generating t

1.	Which among the below mentioned cases are responsible for generating the oscillations with increasing amplitude in time domain response of system function?A. Complex poles with positive real partB. Complex poles with negative real partC. Repeated poles on imaginary axisD. Repeated poles on real axis
A.	A & C
B.	B & D
C.	B & C
D.	A & D
Answer» B. B & D