This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'The most common cause of fracture in a patient with Hemophilia is \nSelect and explain. \nA. Osteoporosis and Restricted Joint Movement, B. Osteonecrosis, C. Iron deposition, D. Pseudo-tumors', 'role': 'user'}, {'content': "Answer: A \nExplanation: Answer is A (Osteoporosis and Restricted Joint Movement) The most common cause of fractures in patients with haemophilia is osteoporosis and restricted joint movements (from haemophilic ahropathj). 'Fractures may occur frequently and after tril trauma because of poor musculature, osteoporosis, limited range of motion in affected joint and haemophilic changes in the bone'.", 'role': 'assistant'}]