Where does the look-out man stand?（）.
A. In positions in which the noises in the ship are least likely to interfere with the hearing of a fog signal and the man can see clearly
B. In positions in which the noises in the ship are much likely to interfere with the hearing of a fog signal
C. In positions in which the hearing of a signal is reduced to a minimum
D. In a position in which the man can see clearly
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