Which one of the following statements about RNA Pol is true?
A.
RNA Pol I transcribes the genes for ribosomal RNAs.
B.
UBF contains several subunits including the TATA-binding protein TBP.
C.
the 18s, 5.8s and 28s rRNAs are synthesized as separate transcripts.
D.
RNA Pol I transcription occurs in the nucleoplasm.