This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Which of the following cholinomimetics activates both muscarinic and nicotinic receptors? \nSelect and explain. \nA. Methacholine, B. Bethanechol, C. Pilocarpine, D. Carbachol', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Carbachol is a parasympathomimetic that mimicks the effect of Ach on both muscarinic and nicotinic receptors. It is a synthetic choline ester where others act on muscarinic receotors only. <img class="fr-fic fr-dib" style="width: 300px;" src=" />Ref: Katzung 13e pg:108', 'role': 'assistant'}]