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: Surgery
[{'content': 'Pre-menstrual fullness in breast in 21 years old unmarried female is- \nSelect and explain. \nA. Galactocele, B. Fibroadenoma, C. Fibroadenosis, D. Breast cancer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]