This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
[{'content': 'A patient with suspicious breast lump, Ultrasonography repo tells BI-RADS-4. What is your inference? \nSelect and explain. \nA. Benign lesion requires no follow up, B. Probably benign requires follow up, C. Suspicious lesion requires biopsy, D. Highly suggestive of malignancy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 0Incomplete assessment--need additional imaging evaluation or prior mammograms for comparison1Negative--nothing to comment on; usually recommend annual screening2Benign finding--usually recommend annual screening3Probably benign finding (<2% malignant)--initial sho-interval follow-up suggested4Suspicious abnormality (2%-95% malignant)--biopsy should be considered5Highly suggestive of malignancy (>95% malignant)-- appropriate action should be taken6Known biopsy-proven malignancyBreast Imaging Repoing and Data System Final Assessment CategoryRef: Sabiston 20e, pg: 831', 'role': 'assistant'}]