In an RC phase shift oscillator, the phase of the feedback voltage is shifted by ______ with a three stage RC phase shift network

In an RC phase shift oscillator, the phase of the feedback voltage is

1.	In an RC phase shift oscillator, the phase of the feedback voltage is shifted by ______ with a three stage RC phase shift network
A.	0 degree
B.	60 degree
C.	90 degree
D.	180 degree
Answer» E.