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': 'The neurotransmitters; nor–adrenaline, adrenaline and dopamine act through which of the following receptors ? \nSelect and explain. \nA. Single pass transmembrane receptors, B. Four pass transmembrane receptors, C. Seven pass transmembrane receptors, D. Ligand gated receptors', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]