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: Radiology
Hair on end appearance in skull X-ray is characteristic of: 
Select and explain. 
A. Sickle cell anemia, B. Thalasemia, C. Megaloblastic anemia, D. Hemochromatosis
B: Thalasemia
Answer: B: Thalasemia 
Explanation: Ans. Thalasemia