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
[{'content': "DNA repair defect is seen in \nSelect and explain. \nA. Xeroderma pigmentosa, B. Bloom's syndrome, C. Ataxia telangiectasia, D. All of these", 'role': 'user'}, {'content': "Answer: D \nExplanation: Examples of DNA repair defects : (1) Xeroderma pigmentosa, (2) Ataxia telangiectasia, (3) Fanconi's anaemia, (4) Bloom's syndrome, (5) HNPCC.", 'role': 'assistant'}]