题目内容

Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? ()

A safe-water buoy will display red and white vertical stripes of reflective material
B. All reflective material is white because it is the most visible at night
C. A special-purpose mark will display either red or green reflective material to agree with its shape
D. A preferred-channel buoy displays either red or green reflective material to agree with the top band of color

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