173. Which statement about radio navigational warnings is TRUE?

The United States is responsible for NAVAREA warnings in the North Atlantic north of 7°N, and west of 15°W.
NAVAREA warnings concern only coastal navigation and inland navigation in large bays or sounds such as Puget Sound.
Long range radio navigational warnings are usually broadcast by radiotelephone, radiotelegraph, and radio-teletypewriter.
The topics for warnings included in HYDROLANTS, HYDROPACS, and NAVAREA warnings are the same.

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