This General Transcription Factor Recognizes the TATA Box in RNA

This general transcription factor recognizes the TATA box in RNA polymerase II promoters. It is...

A) the only single-subunit general transcription factor.
B) able to introduce a rather sharp kink in the double helix upon binding to DNA.
C) responsible for the phosphorylation of the RNA polymerase CTD during transcription initiation.
D) also responsible for the recognition of the BRE element in the promoter.
E) All of the above.