The marking on an anchor chain for 30 fathoms is __________.

A
two links on each side of the 30 fathom detachable link are painted white
B
one link on each side of the 30 fathom detachable link is painted white
C
three links on each side of the 30 fathom detachable link are painted white
D
only the detachable link is painted red
E