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: Medicine
[{'content': 'DNA finger printing is done by: \nSelect and explain. \nA. Splitting DNA, B. DNA of WBC, C. DNA from nucleated cells, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. All of the above', 'role': 'assistant'}]