This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal system, Subject name: Pathology
[{'content': 'Curvilinear trabeculae mimicking Chinese character pattern are seen in \nSelect and explain. \nA. Fibrous Dysplasia, B. Fibrous coical defect, C. Non-ossifying Fibroma, D. Ossifying Fibroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lesions of fibrous dysplasia are well circumscribed, intramedullary and greatly vary in size. The lesional tissue is tan-white and gritty and is composed of curvilinear trabeculae of woven bone surrounded by a moderately cellular fibroblastic proliferation. The Curvilinear shapes of trabeculae mimic Chinese characters, and the bone lacks prominent osteoblastic rimming.Reference: Robbins and Cotran Pathologic Basis of Disease; 9th edition; Volume II; Bones, Joints and Soft Tissue Tumors; Page no: 1206', 'role': 'assistant'}]