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
Which is the most potent stimulator of naive cell? 
Select and explain. 
A. Mature dendritic cell, B. Follicular dendritic cell, C. Macrophages, D. B cell
A: Mature dendritic cell
Answer: A: Mature dendritic cell 
Explanation: . Mature dendritic cell