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: Unknown
[{'content': 'Which of the following is true regarding Singer’s nodule? \nSelect and explain. \nA. Laser therapy is treatment of choice, B. Requires excision as it is potentially malignant, C. Most common symptom is pain, D. It occurs at junction of anterior 1/3rd and posterior 2/3rd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref. Diseases of Ear, Nose and Throat. Pg 229\n\xa0\nVocal nodule\nSinger`s/Teacher`s/Screamer`s/Clergyman`s nodule\n\n\xa0\n\t\nCaused by vocal abuse\nLocation- Bilateral at junction of anterior and middle third of vocal cord\nTreated by speech therapy,Proton pump inhibitors or Microlaryngeal excision', 'role': 'assistant'}]