Each vessel in ocean and coastwise service must have an approved

Each vessel in ocean and coastwise service must have an approved EPIRB. An EPIRB _______.

A.must be stowed in a manner so that it will float free if the vessel sinks

B.must be stowed where it is readily accessible for testing and use

C.is a devise that transmits a radio signal

D.All of the above

正确答案是D