Branching scenario - static answers

Hey, 

I'm trying to create some content with the branching scenario. There are branching questions with one right and one wrong answer which will lead you to another question. Unfortunately now the first answer is always the right one because I was hoping that the answers can be mixed up automatically. Am I overlooking something or do I  have to rearrange the answers by myself? That would complicate the concept of the exercise a lot.

Thnaks in advance!