E7E07 - Amateur Extra Class

E7E07 : What is meant by the term baseband in radio communications?
A The lowest frequency band that the transmitter or receiver covers
B The frequency range occupied by a message signal prior to modulation
C The unmodulated bandwidth of the transmitted signal
D The basic oscillator frequency in an FM transmitter that is multiplied to increase the deviation and carrier frequency
Correct Answer: The frequency range occupied by a message signal prior to modulation