In the Figure Below, Which Label Represents the Promoter?

Question

In the figure below, which label represents the promoter? 
A) A 
B) B 
C) C 
D) D 
E) -35

Accepted Answer

The promoter is the DNA sequence to which RNA polymerase binds in order to initiate transcription. In prokaryotes, the promoter typically includes two regions: the -10 box (also known as the Pribnow box), which is centered around 10 bases upstream of the transcription start site, and the -35 box, which is centered around 35 bases upstream. In this figure, label A represents the -10 box, which is part of the promoter.