9D42 B
 When activated the GMDSS EPIRB will transmit:
A. Only a 406 MHz signal to a Marisat satellite.
B. Only a 406 MHz beacon to polar satellites and 121.5 MHz beacon to search and rescue craft.
C. A 406 MHz beacon to polar satellites and 158.6 MHz homing signal for search and rescue craft.
D. 156.8 MHz and 121.5 MHz beacons for search and rescue craft.
