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: Pediatrics
[{'content': 'All of the following are good prognostic factors for childhood. All except - \nSelect and explain. \nA. Hyperdiploidy, B. Female sex, C. Pre B cell ALL, D. All', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Pre B-Cell ALL o Pre B cell ALL has poor prognosis.", 'role': 'assistant'}]