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
Proteins which is having DNA binding domain in its structure: 
Select and explain. 
A. Zinc finger, B. p- sheet, C. 13-band, D. None
A: Zinc finger
Answer: A: Zinc finger 
Explanation: A i.e., Zinc finger