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
Proliferating breast mass is - 
Select and explain. 
A. Duct ectasia, B. Fibroadenoma, C. Adenosis, D. Papilloma
D: Papilloma
Answer: D: Papilloma 
Explanation: None