BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning lights and shapes for towing vessels?

A
If a tow exceeds 200 meters in length, the towing vessel will display a black ball during daylight.
B
When towing astern, a vessel will carry her identification lights at the masthead in addition to her regular masthead light.
C
When towing astern, the towing vessel may show either a sternlight or a towing light, but not both.
D
If the towing vessel is over 50 meters in length, she must carry forward and after masthead lights.
E