Which is NOT a part of an anchor（）.

A.Come along
B.Jigger
C.Rigger's screw
D.Sealing clamp

A.It makes for an easy connection
B.It gives a spring effect to cushion the shock
C.It eliminates the necessity of a swivel
D.It does not chafe

A.A bowline knot
B.A long splice
C.An overhand knot with a wire rope clip
D.Wire rope clips with a thimble eye