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
RNA polymerase does not require : 
Select and explain. 
A. Template (ds DNA), B. Activated precursors (ATP, GTP, UTP, CTP), C. Divalent metal ions (Mn2+, Mg2+), D. Primer
D: Primer
Answer: D: Primer 
Explanation: D i.e. Primer