043D D
 Which of the following statements concerning COSPAS-SARSAT is false?
a) EPIRBs are used primarily for Distress alerting.
b) These satellites are looking for EPIRB signals on 406 MHz.
c) These satellites use Doppler shift measurement to determine the location of the beacons.
d) After initiating a call request and selecting the CES, these satellites may be used for commercial messages.
