The signal for a fire emergency on an OSV is ____________.

A
a 30 second on 30 second off alternating signal
B
the continuous blast of the ships whistle for not less than 10 seconds supplimented by the continuous ringing of the general alarm bells for not less than 10 seconds
C
an intermittent ringing of the general alarm for not less than ten seconds
D
announced over the PA system
E