单选题The Experimental Lighthouse-buoy has no navigational significance and may be removed at will.The above sentence means（）.AIt's of no use for navigation and would be removed with noticeBIt's useful in navigation and may be removed without noticeCIt's helpless in navigation and may be removed without noticeDIt's helpful in navigation and may be removed without notice
单选题
The Experimental Lighthouse-buoy has no navigational significance and may be removed at will.The above sentence means（）.
A
It's of no use for navigation and would be removed with notice
B
It's useful in navigation and may be removed without notice
C
It's helpless in navigation and may be removed without notice
D
It's helpful in navigation and may be removed without notice
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