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
A patient with suspicious breast lump, Ultrasonography repo tells BI-RADS-4. What is your inference? 
Select and explain. 
A. Benign lesion requires no follow up, B. Probably benign requires follow up, C. Suspicious lesion requires biopsy, D. Highly suggestive of malignancy
C: Suspicious lesion requires biopsy
Answer: C: Suspicious lesion requires biopsy 
Explanation: 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