This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: ENT
[{'content': 'Which of the following is not true about Acute Retropharyngeal abscess? \nSelect and explain. \nA. Dysphonia is common symptom, B. Usually swelling is seen on posterolateral wall of pharynx, C. Toicollis is not uncommon, D. Caries of cervical spine is usually a common cause', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Caries of cervical spine is usually a common cause of chronic retropharyngeal abscess. Ref : ENT textbook by Dhingra 6th edition Pgno : 394-395', 'role': 'assistant'}]