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: Ophthalmology
[{'content': "Distance between nodal point and cornea in Listing's Reduced eye is \nSelect and explain. \nA. 7.2mm, B. 9mm, C. 12mm, D. 15.3mm", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. 7.2mmNodal Point- 7.2 mm behind the anterior corneal surface', 'role': 'assistant'}]