複選題8. Which statement is true for eukaryotic promoters? (A) For eukaryotic RNA polymerase II-dependent promoters (class II promoter), the TATA box is recognized by the general transcription factor TFIIB. (B) Some class II promoters contain a downstream promoter element (DPE), which is located around the transcription start site. (C) As an eukaryotic RNA polymerase III-dependent promoter (class III promoter), the 5S rRNA promoter is located within the gene itself (i.e. an internal promoter). (D) For human rRNA promoter, it contains two important regions and the spacing between these two elements is not important for promoter strength. (E) The U6 snRNA is made by RNA polymerase II and its gene promoter contains a TFIIB .recognition element.