25. What is the clearance distance required by a vessel when navigating in the vicinity of a vessel engaged in mine clearance operations?
(A) 500 meters.
(B) 1,000 meters.
(C) 1,500 meters.
(D) 2,000 meters.

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統計: A(39), B(99), C(10), D(14), E(0) #1974045