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
Good prognosis of ALL - 
Select and explain. 
A. Hyperdiploidy, B. Hypodiploidy, C. T cell line, D. Philadelphia chromosome
A: Hyperdiploidy
Answer: A: Hyperdiploidy 
Explanation: Hyperdiploidy is a good prognostic indicator.
Hypodiploidy, TALL and philadelphia (BCR-ABL fusion) chromosome are poor prognostic indicators.