66I6 D
 Which of the following best describes the full range of services provided by the Inmarsat-C Satellite system?
A. Polling, enhanced group call, and one-way position and data reporting via satellite.
B. FM voice communications via satellite.
C. Two-way messaging and data communications on a store-and-forward basis.
D. Polling, enhanced group call, one-way position and data reporting via satellite, two-way messaging and data communications on a store-and-forward basis.
