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 NOT true about adrenergic receptors \nSelect and explain. \nA. α1 receptors are usually presynaptic, B. β1 receptors are predominantly found in heart, C. Noradrenaline stimulates β1  receptors, D. α2 receptor stimulation inhibits transmitter release', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Presynaptic sympathetic receptors are usually α2. Other statements are true', 'role': 'assistant'}]