<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 32-year-old man visits his family physician for 10 months of persistent left flank pain, weight loss, and fatigue. Also, he has had hematuria a couple of times in the last month. His mother was diagnosed and treated for a pheochromocytoma when she was 36 years old, and his father died at 45 years due to myocardial infarction. His personal medical history is not relevant. He does not smoke and used to be a varsity athlete in high school and university. Physical examination shows temporal wasting, pale mucous membranes and palms, a palpable mass in the left flank, and a varicocele that does not reduce upon recumbency. His family physician sends the patient to the emergency department for an abdominal computed tomography CT scan, which shows a complex left renal mass and a hemangioblastoma in T10. A biopsy of the renal mass is ordered by the oncology team, which demonstrates compact cells with prominent nucleoli, eosinophilic cytoplasm within a network of a small and thin-walled vasculature. What is the most likely type of tumor in this patient?? A: Collecting duct carcinoma, B: Papillary carcinoma, C: Clear-cell carcinoma, D: Chromophobe carcinoma, E: Oncocytic carcinoma,  <response>: This is a question about identifying the most likely type of renal tumor in a patient based on the clinical presentation and biopsy findings. The key details in the stem are:- 32 year old male with left flank pain, weight loss, fatigue and hematuria- Family history of pheochromocytoma in mother and early myocardial infarction in father - Physical exam shows temporal wasting, pale mucous membranes, left flank mass, varicocele- CT shows complex left renal mass and hemangioblastoma - Renal biopsy shows compact cells with prominent nucleoli and eosinophilic cytoplasm within a thin-walled vasculatureThe patients young age, flank mass, and biopsy findings of cells with prominent nucleoli and eosinophilic cytoplasm within a vascular network point towards a clear cell renal cell carcinoma. This is the most common type of renal tumor in adults. The other choices can be ruled out based on not fitting the clinical or pathological description.C: Clear-cell carcinoma 