A. TATA box and start site
B. TATA box and stop site
C. TATA box and operator
D. TATA box and the promoter
I have been asked this question in a national level competition.
This question is from Gene Expression Control topic in section Control of Gene Expression of Cell Biology
To elaborate: Core promoter is the region upstream of a gene that stretches between the TATA box and the transcription start site. It is the site of assembly for pre-initiation complex consisting of RNA polymerase II and general transcription factors that are required for eukaryotic gene transcription.