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': 'In gingivitis, the immunoglobulins are consistent with the increase in number of \nSelect and explain. \nA. Fibroblasts, B. Neutrophils, C. Lymphocytes, D. Plasma cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]