150 INLAND ONLY You are meeting "head on" a tug towing a barge alongside about a mile away. In addition to the white masthead lights which other lights do you see on the tug and tow combined?

A. One green and one red sidelight on the outside of the unit
B. One green and one red sidelight and a special flashing light
C. Only the green and red sidelights marking each vessel
D. The green and red sidelights marking each vessel and a special flashing light