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: Pathology
[{'content': "DNA repair defect is associated with - \nSelect and explain. \nA. Xeroderma pigmentosum, B. Icthyosis, C. Angelman syndrome, D. DiGeorge's syndrome", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Defective DNA repair syndromes are : Xeroderma pigmentosa, Bloom syndrome, Fanconi syndrome and ataxia telongectisia.', 'role': 'assistant'}]