This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
[{'content': 'True about Plummer-Vinson syndrome \nSelect and explain. \nA. Web is M/C in mid esophagus, B. Web is M/C in lower esophagus, C. Web is M/C in postcricoid region, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: PLUMMER-VINSON SYNDROME:- In Plummer-Vinson syndrome patients present with dysphagia due to web in the postcricoid region and due to incoordinated swallowing secondary to esophageal spasm. Text book of ENT Mohan Bansal; pg num:- 461', 'role': 'assistant'}]