E4C10 - Amateur Extra Class

E4C10 : What is an advantage of having a variety of receiver bandwidths from which to select?
A The noise figure of the RF amplifier can be adjusted to match the modulation type, thus increasing receiver sensitivity
B Receiver power consumption can be reduced when wider bandwidth is not required
C Receive bandwidth can be set to match the modulation bandwidth, maximizing signal-to-noise ratio and minimizing interference
D Multiple frequencies can be received simultaneously if desired
Correct Answer: Receive bandwidth can be set to match the modulation bandwidth, maximizing signal-to-noise ratio and minimizing interference