9D22 B
 A properly operating VHF DSC transmitter used in the GMDSS system can be expected to have a carrier frequency accuracy of:
A. +/- 10 Hertz Coastal, +/- 25 Hertz Marine.
B. +/- 10 Hertz Coastal and Marine.
C. +/- 25 Hertz Coastal and Marine.
D. +/- 100 Hertz Coastal and Marine.
