20C2 C
 Which of the following statements is false?
A. Key letters or abbreviations may be used in GMDSS Radio Logbooks if their meaning is explained.
B. Urgency communications may need to be entered in the GMDSS radio log.
C. Distress communications heard do not require entries if the vessel did not participate in SAR activity.
D. Log entries of VHF Safety broadcasts are not required.
