This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
[{'content': 'Fibroadenoma of the breast are: \nSelect and explain. \nA. Fixed mass, B. Diffuse mass, C. Multiple diffuse mass, D. Solitary mobile mass', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Solitary mobile mass(Ref: Schwartz 10/e p510)* Fibroadenoma is the MC benign tumor of Female breast* MC in 15-30 years* Also known as Breast mouse', 'role': 'assistant'}]