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: Surgery
Which of  the  following is the most common  tumour  to produce metastasis to cervical lymph nodes? 
Select and explain. 
A. Glottic carcinoma, B. Nasopharyngeal carcinoma, C. Carcinoma base of tongue, D. Carcinoma lip
B: Nasopharyngeal carcinoma
Answer: B: Nasopharyngeal carcinoma 
Explanation: Cervical nodal metastases may be the only manifestation of nasopharyngeal cancer.
Nodal metastases are seen in 75% of the patients, when first seen, about half of them with bilateral nodes.
Distant metastases involve bone, lung, liver and other sites.