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: Medicine
[{'content': 'All are true regarding Plummer Vinson syndrome,except - \nSelect and explain. \nA. Oesophageal web, B. Predisposes to malignancy, C. Koilongchia, D. Common in elderly males', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]