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: Dental
[{'content': 'CART WHEEL APPEARANCE is a feature of which of the defensive cells of the pulp \nSelect and explain. \nA. Mast cell, B. Plasma cell, C. Lymphocytes, D. Basophills', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]