u/RiskHour6197

I am taking a course online and I failed the first exam so I need to take the supplemental. When booking this through ProctorU, do I select the final exam or the challenge? I figured the challenge because the first one that I failed was the final but I’m not getting a response back from exam services and I can’t reschedule a supplemental after I book it so I want to make sure I’m doing it right.