Can you help me figure out what my grade will be?

Hi. I have just finished school a few days ago and I’m getting my report card in a few days. I just want to kind of prepare myself for what grade I will get :) hahah.
In my school we have 4 terms and each is worth an individual grade. At the end of the school year, the school averages them out and then we get our final grade of the year. So what if I got an A for both term 1 and term 2, a B for term 3, and an A- for term 4? What is my final grade going to be? A B or an A? I would try and figure this out myself but I have no idea how to! Thankyou! :)