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': 'Receptor for which of the following is present  intracellularly ? \nSelect and explain. \nA. Insulin, B. Corticosteroid, C. Epinephrine, D. Glucagon', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]