This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
Most common malignant tumour of nasopharynx in children is: 
Select and explain. 
A. Lymphoma, B. Rhabdomyosarcoma, C. Carcinoma, D. Neuroblastoma
B: Rhabdomyosarcoma
Answer: B: Rhabdomyosarcoma 
Explanation: Rhabdomyosarcoma is the most common malignant tumour of the nasopharynx, though all of the above are seen with different frequency.