In eukaryotes, general transcription factors

Question

a bind to other proteins or to a sequence element within the promoter called the TATA box.

b inhibit RNA polymerase binding to the promoter and begin transcribing.

c usually lead to a high level of transcription even without additional specific transcription factors.

d are required for the expression of specific protein-encoding genes.

e bind to sequences just after the start site of transcription.

Answer 1

the answer you probably want is A.  

but A isn't always true and E is true in some cases, in fact, E is probably true as much as A is.   most people would think A is true.