<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 22-year-old man comes to the physician because of a 2-week history of cough and decreased urination. The cough was initially nonproductive, but in the last few days he has coughed up small amounts of blood-tinged sputum with clots. He has not had any fevers, chills, or weight loss. He has smoked one pack of cigarettes daily for 5 years. Pulse is 115min and blood pressure is 12566 mm Hg. Physical examination shows dried blood around the lips. Serum studies show a creatinine of 2.9 mgdL. Results of a serum antineutrophil cytoplasm antibody test are negative. A biopsy specimen of the kidney is most likely to show which of the following light microscopy findings?? A: Neutrophilic infiltration of the capillaries, B: Expansion of the mesangial matrix, C: Thinning of the basement membrane, D: Fibrin crescents in Bowman space, E: Enlarged and hypercellular glomeruli,  <response>: This is a medical question asking about the most likely kidney biopsy finding in a 22-year-old male patient with a 2-week history of cough, decreased urination, coughing up blood-tinged sputum, no feverschillsweight loss, 5 year 1 packday smoking history, tachycardia, hypertension, dried blood around lips, elevated creatinine, and negative ANCA. The key findings are the acute onset of hematuria and renal insufficiency in a young smoker, which are concerning for a proliferative glomerulonephritis such as crescentic glomerulonephritis. The differential would include anti-GBM disease, ANCA-associated vasculitis, and immune-complex mediated glomerulonephritis. However, the negative ANCA makes anti-GBM disease most likely. In anti-GBM disease, antibody deposition leads to necrosis and crescent formation.D: Fibrin crescents in Bowman space 