This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Good prognosis of ALL \nSelect and explain. \nA. Hyperdiploidy, B. Hypodiploidy, C. T cell line, D. Philadelphia chromosome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Favourable prognostic markers for ALL include : 1) age b/w 2-10 yrs 2) a low white cell count. 3) hyperdiploidy. 4) trisomy of chromosomes 4,7,10 5) presence of a t (12;21). Ref :Robbins pathologic basis of disease ; south east asia edition ;pg:592', 'role': 'assistant'}]