Can i get BBB overall for A level if i get DCC in AS level? (edexcel)?

[ivy002]

i got a D in chemistry, C in physics and C in maths.. how much should i get in A2 level for me to get BBB? or is it at all possible? also i am retaking some of my AS level units

if i can't get BBB what can i get? maybe CCC? what are your predictions?