Analog Signals Differ from Digital Signals in That

Multiple Choice

Analog signals differ from digital signals in that

A) analog signals are represented vs.time while digital signals are measured vs.frequency.
B) analog signals are periodic,digital signals are not.
C) analog signals are continuous while digital signals remain at one constant level and then move to another constant level.
D) analog signals operate a higher frequencies than digital signals.
E) digital signals operate at higher frequencies than analog signals.