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': 'A 45-years old woman presents with a hard and mobile lumps in the breast. Next investigation is: \nSelect and explain. \nA. FNAC, B. USG, C. Mammography, D. Excision biopsy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: First investigation done in suspected case of breast cancer: MammographyQ Investigation of choice for diagnosis of breast cancer: BiopsyQ (trucut biopsy/core cut biopsy/ needle biopsyQ)', 'role': 'assistant'}]