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
In gingivitis, the immunoglobulins are consistent with the increase in number of 
Select and explain. 
A. Fibroblasts, B. Neutrophils, C. Lymphocytes, D. Plasma cells
D: Plasma cells
Answer: D: Plasma cells 
Explanation: None