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: Anatomy
[{'content': 'Pectinate line is an impoant landmark because? \nSelect and explain. \nA. It marks a divide in nerve supply, B. It marks the location of change in type of epithelium, C. It represents a lymphatic and venous divide, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: All of the above', 'role': 'assistant'}]