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
Expansile lytic lesion with fluid-fluid levels within the metaphysis of fibula seen on CT and MRI in an early adolescent female is typical of – 
Select and explain. 
A. Giant cell tumor, B. Aneurysmal bone cyst, C. Hemangioma, D. Fibrous dysplasia
B: Aneurysmal bone cyst
Answer: B: Aneurysmal bone cyst 
Explanation: Amongst given options, fluid-fluid levels are seen in GCT and ABC.
Lesion in question is metaphyseal:-

              ABC →  Metaphyseal
             GCT →  Epiphyseal

Age of the patient is early adolescent:-

             ABC →  Before the age of 20 years
            GCT →  20 - 40 years

So, the answer to the question is ABC.