The rope which is rove from the truck to be used with a bos’n chair is called a（）.

A.join two lines of different sizes
B.join two lines of equal sizes
C.add strength to a weak spot in a line
D.act as a stopper to transfer a line under strain

A.swaged socket
B.thimbled mechanical splice
C.hand splice
D.spelter poured and resin sockets