<p>Several options have been historically offered/used
[ol]
[<em>]Nothing
[</em>]You will be told that CB is unable to provide you with a score and will offer a refund.
[li]you will be told that CB is unable to provide you with a score and will offer you an opportunity to retake.[/li][/ol]</p>
<p>The rest of the class will not be affected by your action. #3 is the most probable, followed by #1.</p>