I am creating a 10-page final assessment. Everything works great, with the grading, etc. However, when I publish the course and preview in a browser, each question's answer-choice radio button is already showing as selected in a random order and sometimes it's the correct answer choices that are highlighted. I'm able to change the selected button, but I don't like that it pre-selects an answer choice. When I'm previewing in Lectora, however, this doesn't happen. How can I have these radio buttons display without one of them showing up as already selected?