This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'All are true about carcinoma oesophagus except \nSelect and explain. \nA. Squamous cell is most common type of cancer, B. Squamous is increasing in incidence, C. Squamous is more common in upper two-third of oesophagus, D. Adenocarcinoma is common in lower third of oesophagus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Squamous cell carcinoma generally affects the upper two-thirds of the oesophagus and adenocarcinoma the lower third. Worldwide, squamous cell cancer is most common, but adenocarcinoma predominates in the west and is increasing in incidence.Ref: Bailey and Love 27e pg: 1086', 'role': 'assistant'}]