What are Group A AP Exams? Help is very much needed.

I received a conditional offer from Kent requiring I get "2 Group A Advanced Placement Exams at 5 and 4." I looked on Google but couldn't figure out what Group A APs are. I already have AP Lit exam at 4 and AP Bio at 5. Are these Group A APs? If so, why are they included in the conditional offer if I already got them?

If you don’t understand your offer conditions from Kent then you need to ask Kent to explain