This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
True about eukaryotic initiation is a/e 
Select and explain. 
A. Initiator sequence spans TSS (+1), B. Distal regulatory element (DRE) is exclusively found in eukaryotes, C. Different a subunits are responsible for recognition specificity, D. Trans acting factors bind to CAAT/GC box - promoter proximal element.
C: Different a subunits are responsible for recognition specificity
Answer: C: Different a subunits are responsible for recognition specificity 
Explanation: C i.e. Different o- subunits are responsible for recognition specificity