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: Pathology
Patient comes with pain in pharyngeal region and is having carcinoma of nasopharynx. The diagnosis is ? 
Select and explain. 
A. Homer's syndrome, B. Glossopharyngeal neuralgia, C. Trotter's syndrome, D. Eagles syndrome
C: Trotter's syndrome
Answer: C: Trotter's syndrome 
Explanation: None