> B would not be legal.

ENTIRELY dependent on where you are.

>From part 97 of the FCC rules:
 "No provision of these rules prevents the use by an amateur station
of any means of radio communication at its disposal to provide
essential communication needs in connection with the immediate safety
of human life and immediate protection of property when normal
communication systems are not available. "

If your phone lines have been cut, and there is reason to suspect a
burglary is in progress, that would seem to fall under the definition
of "emergency".

I'm not advocating unlicensed use of the ham bands, I'm also an Extra
class ham.
That said, I know many repeater sites use ham radio to indicate breakins.
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