This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitreous and retina, Subject name: Ophthalmology
Most common malignant orbital tumour in children is 
Select and explain. 
A. AML, B. ALL, C. Rhabdomyosarcoma, D. Cavernous hemangioma
C: Rhabdomyosarcoma
Answer: C: Rhabdomyosarcoma 
Explanation: None