When a line is spirally coiled about its end and lying flat on deck，it is said to be（）.

A.Personnel may work beneath suspended loads，as long as they are alert and wear hard hats
B.If a suspended load with no tag begins to spin，personnel should attempt to stop the spinning if the load is within reach
C.If tag lines are used to control a suspended load，they should be secured to the deck
D.Personnel not involved in the hoisting operation should be kept clear of the transfer area

A.Lowering the boom
B.Raising the boom
C.Spotting the boom over the deck
D.Swinging the boom athwartships

A.Heavy rains could cause downflooding
B.Visibility could be restricted by low clouds
C.Large waves could cause structural damage
D.Personnel may be injured by loose deck gear blown by the wind