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
DNA repair defect is associated with - 
Select and explain. 
A. Xeroderma pigmentosum, B. Icthyosis, C. Angelman syndrome, D. DiGeorge's syndrome
A: Xeroderma pigmentosum
Answer: A: Xeroderma pigmentosum 
Explanation: Defective DNA repair syndromes are : Xeroderma pigmentosa, Bloom syndrome, Fanconi syndrome and ataxia telongectisia.