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
[{'content': "MIC-2 is a marker of- \nSelect and explain. \nA. Ewing's sarcoma, B. Osteosarcoma, C. Dermatofibrous protruberans, D. Alveolar cell sarcoma", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Ewing's Sarcoma o MIC 2 (CD 99) is a specific marker for Ewing's sarcoma and peripheral primitive neuroectodermal tumors.", 'role': 'assistant'}]