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: Dental
[{'content': 'Transverse line extending from or between the middle of upper canine and incisive fossa is called: \nSelect and explain. \nA. Horizontal line, B. Orientation line, C. Transverse line, D. CPC line', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]