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: Ophthalmology
Commonest cause for bilateral proptosis children is: 
Select and explain. 
A. Cavernous hamangioma, B. Chloroma, C. Fibrous histiocyloma, D. Rhabdomyosarcoma
B: Chloroma
Answer: B: Chloroma 
Explanation: Ans. Chloroma