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: Surgery
[{'content': "Malignant cell in Hodgkin's lymphoma is - \nSelect and explain. \nA. Reed sternberg cell, B. Lymphocytes, C. Histiocyte, D. Reticulum cells", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]