This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Orthopedics, Subject name: Surgery
[{'content': 'Rapid increase in the size of an osteochondroma might occur when - \nSelect and explain. \nA. Malignant transformation, B. Bursitis, C. Rupture of the stalk, D. Dystrophic calcification', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Malignant transformation Rapid increase in the size of an osteochondroma s suggeative of malignant transformationComplications of osteochondromao Fractureo Malignant transformationo Angular deformityo Growth arresto Neurovascular compromise", 'role': 'assistant'}]