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': 'What is epicolic node? \nSelect and explain. \nA. Node draining colon, B. Adjacent to aoa, C. Epitracheal node, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .Lymphatic Drainage of colon * Mucosa contains no lymph channels, so mucosal cancers rarely metastasize. * Nodes are epicolic (located in the colonic wall), paracolic (located along the inner margin), intermediate (located near mesenteric vessels), principal (located near main mesenteric vessles). ref:SRB&;s manual of surgery,ed 3,pg no 818', 'role': 'assistant'}]