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
Which of the following are situated away from the coding region: 
Select and explain. 
A. Promoter, B. Enhancer, C. Operator, D. All
D: All
Answer: D: All 
Explanation: A i.e. Promoter; B i.e. Enhancer; C i.e. Operator