I don’t know if it’s possible

I did aqa physics this year, paper 1 went alright, paper 3 went alright but paper 2 didn’t. Paper 2 I felt like was harder than paper 2 last year (I’m a resit student). I want to get a B, I was averaging As in past papers for both paper 1 and 2, but I would say on paper 2, I got cooked by the SHC, charged particles on string and the nuclear decay, apart from that I think it went well. I would get marks from working out for shc and nuclear decay though, is an A on the table? I would say I got 50 marks or more on paper 1 and 3, not sure about 2.