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: Pharmacology
[{'content': 'Which of the following is an ionic channel ? \nSelect and explain. \nA. a -1 receptors, B. b - 1 receptors, C. Nicotinic cholinergic receptors, D. Muscarinic cholinergic receptors', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Nicotinic cholinergic receptors", 'role': 'assistant'}]