This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal infections, Subject name: Anatomy
[{'content': 'A young girl presented with swelling of right thigh with history of trauma 2 months back. Now she presents with swelling at mid shaft of femur and low grade fever. ESR is midly raised. X ray shows a laminated Periosteal reaction, next line of investigation would be \nSelect and explain. \nA. MRI, B. Biopsy, C. Bone scan, D. Blood count and CRP', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Next best investigation is MRI Extent of soft tissue involvement Skip lesions in the same compament Relationship if neurovascular bundle to the tumor Intramedulary extent of tumor Refer Campbell 13th/e', 'role': 'assistant'}]