This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuro-ophthalmology, Subject name: Ophthalmology
[{'content': 'Which are first order neuron in optic pathway- \nSelect and explain. \nA. Bipolar cells, B. Ganglionic cells, C. Cells of lateral geniculate body, D. Astrocytes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: in visual sensation first order neurons lies in the bipolar cell layer of retina. Reference: textbook of comprehensive Opthalmology by AK Khurana.', 'role': 'assistant'}]