How does an icebreaker normally free a ship which has become beset while navigating independently?

A
By backing down the track and cutting out ice on either bow
B
By approaching from the stern and crossing ahead at an angle of 20° to 30° to the beset ship's course
C
By overtaking the beset ship, running ahead and then backing down the track to the beset vessel
D
By approaching the vessel from astern and towing the beset vessel stern first
E