When viewed from above，the best position for the guy in relation to the boom is（）.<br>A:At a 45° angle<br>B:At right angles<br>C:4 feet aft of the heel of the boom<br>D:Parallel to the boom

When viewed from above，the best position for the guy in relation to the boom is（）.
A:At a 45° angle
B:At right angles
C:4 feet aft of the heel of the boom
D:Parallel to the boom

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