Quiz results report always use default input format

If you take a quiz and see the results report you will notice that the the report doesn't give you the same output as the question did.

To recreate, create a question and insert a picture in it. On a vanilla Drupal install you will have to chose the "full HTML" input format to do this.

Take the quiz, and go to the results report. You will see that the picture you inserted in the question isn't showing in the report. This is because Quiz uses the sites default input format (in a vanilla Drupal install: "Filtered HTML") for the output. Change default input format and the report will change too.

So, the report should use the same input format (output, really) that the question was created in.