This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Which class of neurotransmitter would be most affected by a toxin that disrupted microtubules within neurons? \nSelect and explain. \nA. Amino acid transmitters, B. Catecholamine transmitters, C. Membrane-soluble transmitters, D. Peptide transmitters', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .', 'role': 'assistant'}]