A) RNA polymerase II is responsible for the transcription of genes encoding protein-coding sequences only.
B) Many promoters recognized by RNA polymerase II contain regulatory elements several kbp upstream of the initiation site.
C) TFIIB has a role in converting a closed-promoter into an open-promoter complex.
D) The C-terminal domain of the largest subunit of RNA pol II undergoes extensive phosphorylation prior to transcription elongation.
E) A multiprotein complex is involved in communication between upstream control elements and proteins bound at the promoter.