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: Surgery
[{'content': 'Genetic alteration in which of the following chromosome can lead to oligodendroglioma? \nSelect and explain. \nA. Chromosome 3p, B. Chromosome 9q, C. Chromosome 13q, D. Chromosome 19q', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Loss of heterozygosity in chromosome 19q > 1p is the most common genetic alteration that can result in oligodendroglioma.', 'role': 'assistant'}]