单选题At 1810，a red buoy bears 010° relative. This buoy marks（）.Athe side of York Spit ChannelBthe visibility limit of the red sector of Cape Henry LightCa submerged obstruction in York Spit ChannelDthe York River Entrance Channel
单选题
At 1810，a red buoy bears 010° relative. This buoy marks（）.
A
the side of York Spit Channel
B
the visibility limit of the red sector of Cape Henry Light
C
a submerged obstruction in York Spit Channel
D
the York River Entrance Channel
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