The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen（）.<br>A:under existing visibility conditions<br>B:under perfect visibility<br>C:with ten miles visibility<br>D:with fifteen miles visibility

The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen（）.
A:under existing visibility conditions
B:under perfect visibility
C:with ten miles visibility
D:with fifteen miles visibility

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