This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute Lymphoblastic Leukemia, Subject name: Pathology
[{'content': 'The presence of the Philadelphia chromosome is associated worse with a prognosis in patients with which of the following diseases? \nSelect and explain. \nA. Acute lymphoblastic leukemia, B. Acute myelogenous leukemia, C. Chronic lymphocytic leukemia, D. Chronic myelogenous leukemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The presence of the Philadelphia chromosome is associated worse with a prognosis in patients with Acute lymphoblastic leukemia', 'role': 'assistant'}]