<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 3-week history of abdominal pain, loose, non-bloody stools, and intermittent nausea. He also reports intermittent fever. He has not had vomiting, tenesmus, or rectal pain. He has no history of serious illness and takes no medications. His vital signs are within normal limits. Rectal exam is unremarkable. Laboratory studies show a leukocyte count of 15,200mm3 and an erythrocyte sedimentation rate of 44 mmh. Test of the stool for occult blood and stool studies for infection are negative. A CT scan of the abdomen shows mural thickening and surrounding fat stranding of discrete regions of the terminal ileum and transverse colon. A colonoscopy is performed and biopsy specimens of the affected areas of the colon are taken. Which of the following findings is most specific for this patients most likely diagnosis?? A: Neutrophilic inflammation of the crypts, B: Inflammation of the terminal ileum, C: Intranuclear and cytoplasmic inclusion bodies, D: Neutrophil-rich pseudomembranes, E: Non-caseating granulomas,  <response>: This is a medical question asking about the most specific finding for the patients most likely diagnosis based on the clinical history and test results described. The key findings are a 3-week history of abdominal pain, diarrhea, nausea, and fever in a young man, along with lab results showing elevated white blood cell count and sedimentation rate. Imaging shows thickening and inflammation of the terminal ileum and colon. This presentation is most consistent with inflammatory bowel disease, likely Crohns disease given the involvement of the ileum. The question asks about biopsy findings that would be most specific for confirming this diagnosis. Choice A describes nonspecific inflammation. Choices B and D may be seen but are not specific. Choice E describes granulomatous inflammation, which is characteristic of Crohns disease. So choice E, non-caseating granulomas, would be the most specific finding.E: Non-caseating granulomas 