<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 53-year-old male presents to your office for abdominal discomfort. The patient states he first noticed pain on his right flank several months ago, and it has been gradually getting worse. For the past week, he has also noticed blood in his urine. Prior to this episode, he has been healthy and does not take any medications. The patient denies fever, chills, and dysuria. He has a 40 pack-year smoking history. Vital signs are T 37 C, HR 14090 mmHg, HR 84min, RR 14min, O2 98. Physical exam is unremarkable. CBC reveals a hemoglobin of 17 and hematocrit of 51, and urinalysis is positive for red blood cells, negative for leukocytes. Which of the following is the most likely diagnosis?? A: Renal cell carcinoma, B: Polycystic kidney disease, C: Abdominal aortic aneurysm, D: Pyelonephritis, E: Renal oncocytoma,  <response>: Based on the information provided in the question stem, the most relevant findings are:- 53-year-old male with right flank pain and hematuria- No fever, chills or dysuria - 40 pack-year smoking history- Vital signs normal except for elevated BP- Physical exam unremarkable- Hemoglobin and hematocrit elevated- Urinalysis positive for RBCs, negative for WBCsThe key findings are the patients age, smoking history, flank pain, hematuria, and elevated hemoglobinhematocrit without evidence of infection, which are classic signs of renal cell carcinoma. Polycystic kidney disease would not cause hematuria. Abdominal aortic aneurysm would not cause hematuria or flank pain. Pyelonephritis is unlikely given lack of fever, chills, dysuria, and negative urinalysis for WBCs. Renal oncocytoma could cause similar findings but is less common than renal cell carcinoma.A: Renal cell carcinoma 