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: Orthopaedics
[{'content': 'A young patient presents with enlargement of the costochondral junction and with the white line of Fraenkel at the metaphysis. The diagnosis is - \nSelect and explain. \nA. Scruvy, B. Rickets, C. Hyperparathyroidism, D. Osteomalacia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Enlargement of the costochondral junction (rosary) and white line of Frankel are seen both in scurvy and rickets.\nHowever, the best answer here is scurvy as white line Fraenkel is seen in healing rickets, not in active rickets. And rickets (if not specified as healing rickets) refers to active disease.', 'role': 'assistant'}]