You receive a Routine DSC call specifying an alternate working voice frequency & emission. Your transceiver frequency display reads: 4125.0 kHz transmit 4125.0 kHz receive:

Correct Answer: Option C — Both a) and b) are true

DSC controllers automatically tune transceivers based on the received call's data. However, 4125 kHz is a designated distress and safety frequency. Using it for routine traffic violates ITU Radio Regulations, which mandate that routine calls must shift to designated working frequencies to keep safety channels clear for emergency communications.