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: Medicine
[{'content': 'Good prognostic Factors for ALL include all of the following, Except: \nSelect and explain. \nA. Hyperdiploidy, B. Female sex, C. Pre B cell ALL, D. t (12 : 21) translocation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Pre B cell ALL) Hyperdiploidy, Female sex and translocation t (12, 21) are associated with good prognosis. Pre B cell ALL may be associated with a poor prognosis and is the single answer of exclusion.', 'role': 'assistant'}]