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: Physiology
[{'content': 'Which are first-order neuron in the 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: Visual pathway\n\nReceptors- Rods & Cons\nFirst order neurons- Bipolar cell axons (In retina)\nSecond order neurons- Ganglion cell axons ( In optic disc, optic nerve, optic chiasma, optic tracts)\nThird order neurons- Lateral geniculate body nerve cell axons (optic radiation)', 'role': 'assistant'}]