A patient with suspicious breast lump, Ultrasonography repo tells BI-RADS-4. What is your inference?

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