下列编码中，属于正确国际码的是( )。

A．5EF6H

B．FB67H

C．8E8FH

D．C97DH

Serving is（）.

A.marine or ratline would along the grooves of a rope

B.narrow strips of light canvas or cotton cloth spiral-wrapped along the rope

C.marline tightly wound on the rope by means of a board or mall

D.a splice made by laying the strand of one rope into the vacated grooves of another rope