A facility used for the discharge of a cargo of a particular hazard, such as chlorine, butane or ethane, must have what to warn water traffic of an immediate danger during fire or cargo release?

A
An emergency boat and crew
B
A siren or rotating flashing light
C
Flashing red lights located one-half mile upstream and downstream of the facility
D
Buoys with flashing lights controlled from shore, located one-half mile upstream and downstream of the facility
E