You are piloting a vessel, which is required to have a radiotelephone, on the navigable waters of the United States. You must _____.

A
maintain a listening watch and communicate in English
B
use the bridge-to-bridge VHF-FM designated frequency only to exchange navigational information or necessary tests
C
have on board an operator who holds a restricted radiotelephone operator permit or higher license, as well as a FCC ship station license
D
All of the above
E