How do the height and location of a tug's towing bitts relate to the danger of tripping?

A
The further forward and closer to amidships the more readily the tug will trip.
B
Placement further aft permits more effective pulling, better steering and eliminates the danger of tripping.
C
Installing the bitts down low lowers the center of gravity.
D
The height and position of towing bitts has no significance.
E