Final Round Trading Interview

Hey guys,

I have a final round interview coming up for a full time TA position with a small prop options trading firm coming up and I was wondering what I should focus on in terms of preparation. The first round consisted of a few simple math questions of the top of my head and a test with emphasis on gambling probabilty questions and basic capital markets knowledge.

I'm assuming the final round is just more of the same but I want to knock this out of the park because my GPA isn't the best it could be. Anything in particular I should be reviewing for this particular type of trading?

Thanks gents