A vessel towing where the tow prevents

A vessel towing where the tow prevents her from changing course shall carry（）.

• Aonly the lights for a vessel towing
• Bonly the lights for a vessel restricted in her ability to maneuver
• Cthe lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver
• Dthe lights for a towing vessel and the lights for a vessel not under command