b) option is correct
Step-by-step explanation:
- Eukaryotic promoters are 1000 base pairs (bp) long and present upstream to downstream
- Eukaryotic promoters can be divided into two separate parts: Core promoter and regulatory sequence
- Core promoter is the site where RNA Polymerase II binds and initiate transcription, it includes two consensus sequences called TATA box and initiator region
- RNA Polymerase II is a large proteinaceous complex which consists of more than 12 subunits
- Regulatory sequence includes GC box, CAAT box and downstream promoter element