I thought it would relate to why the anti-torque drive failed. If the TR drive shaft broke and was flapping around in the tail shaft, then it would chew the machine to bits. If it is due to a less dramatic reason then the pitch/yaw would be as has been described.
At cruise speed I thought that the yaw should be minimal due to the effectiveness of the tail/vertical stabiliser doing what it's name implies.
I think for exam purposes though, apply the KISS principle. Keep It Simple Stupid! You've already described the answer, it will yaw right.
The trick as a pilot in the real world is to realise what has gone wrong and know how to fix it.
Good luck on the exams.
