The poly(a) sequence that is added to rna during processing: select all that apply.

Poly A is added to the end of a eukaryotic mRNA modified. Polyadenylation is the combination of a poly(A) tail to a messenger RNA. It also consists of multiple adenosine monophosphate. In other words, it is a stretch of RNA that has only adenine bases. In eukaryotes, polyadenylation is one of the process which produces mature messenger RNA (mRNA) for translation.

I believe that the answer is A and if that doesn't work try B

Explanation:

none just kinda something i remember heh heh