This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pharmacology, Subject name: Pharmacology
[{'content': 'All of the following agents act by intracellular receptors EXCEPT: \nSelect and explain. \nA. Thyroid hormones, B. Vitamin D, C. Insulin, D. Steroids', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The insulin receptor is located at outer membrane Pg.no.261KD TRIPATHI SEVENTH EDITION', 'role': 'assistant'}]