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: ENT
Type of speech seen in nasopharyngeal carcinoma - 
Select and explain. 
A. Rhinolalia clausa, B. Rhinolalia aperta, C. Hot potato voice, D. Hoarse voice
A: Rhinolalia clausa
Answer: A: Rhinolalia clausa 
Explanation: Nasopharyngeal carcinoma causes denasal speech, i.e. Rhinolalia clausa.