In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.

In ________, the phase of the carrier is varied to represent two or mo

1.	In ________, the phase of the carrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant.
A.	ASK
B.	PSK
C.	FSK
D.	QAM
Answer» C. FSK