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
Good prognosis of ALL 
Select and explain. 
A. Hyperdiploidy, B. Hypodiploidy, C. T cell line, D. Philadelphia chromosome
A: Hyperdiploidy
Answer: A: Hyperdiploidy 
Explanation: 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