When is braking of one wheel on a tractor (brake separation) required?

1. AWhen the tractor driver wants to make a sharp turn on the spot at high speed.
2. BWhen the tractor driver wants to manoeuvre in a particularly large radius between buildings or crops.
3. CWhen the tractor driver wants to make a sharp turn on the spot at very low speed.
4. DWhen one wheel is slipping on the ground and the tractor is not moving forward.

Pick an answer to test yourself