A bridge over a navigable waterway is being repaired. There is a traveller platform under the bridge's deck that significantly reduces the vertical clearance. If required by the CG district commander, how will this be indicated at night?

A
Illumination by flood lights
B
A quick flashing red light at each lower corner
C
A strobe light visible both up and downstream
D
Fixed amber lights under the extreme outer edges of the traveller
E