Below are some events that occur during rna processing. select the answer that best represents the order in which they occur. 1. cap-binding protein binds to 5' cap 2. polyadenylate polymerase binds and adds poly(a) tail 3. splicing 4. mrna transcription continues 5. poly(a) binding protein binds to poly(a) tail 6. exonuclease cuts at gu-rich section 7. polyadenylation factor binds to mrna 8. guanylyltransferase binds to 5' end of mrna