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
A 45 year old woman presents with a hard and mobile lump in the breast. Next investigation is: 
Select and explain. 
A. FNAC, B. USG, C. Mammography, D. Excision biopsy
A: FNAC
Answer: A: FNAC 
Explanation: In any patient with a breast lump or other symptoms suggestive of carcinoma, diagnosis should be made by a combination of triple assessment: a. Clinical assessment b. Radiological imaging c. Tissue sampling for either cytological or histological examination Ref: CSDT, 11th Edition, Page 324-25; Bailey and Love's Sho Practice of Surgery, 23rd Edition, Page 760.