While cranking out a quadrantal davit, slippage of the quadrant due to excessive wear or failure of the teeth in the quadrant will cause the __________.

A
davit arm to pivot on the traveling nut and the head to fall outboard
B
traveling nut to lock up in place on the worm gear
C
limit switch to engage and hold the traveling nut in position
D
winch brake to lock in position and prevent lowering the boat
E