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
[{'content': 'Bone Marrow Showing Positive Staining With Periodic Acid Schiff .Likely Diagnosis is \nSelect and explain. \nA. AML-M2, B. AML-M3, C. AML-M6, D. ACUTE LYMPHOBLASTIC LEUKEMIA', 'role': 'user'}, {'content': 'Answer: C \nExplanation: AML M6 (Acute erythroid leukaemia) characterized by a marked increase of erythroid precursors in bone marrow', 'role': 'assistant'}]