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: Pediatrics
[{'content': 'Infant presented with bony pain and some dematitis in scalp. Skull x-ray is given below. Electron microscopy of biopsy from a lesion is given below. What is the most  probable diagnosis? \nSelect and explain. \nA. Multiple myeloma, B. Thalassemia, C. Langerhans cell histiocytosis, D. AML', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]