This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: A.N.S., Subject name: Pharmacology
[{'content': 'Which of the following is slowest acting receptor? \nSelect and explain. \nA. Beta 1 receptor, B. M2 receptor, C. Tyrosine kinase receptor, D. Mineralocorticoid receptor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. Mineralocorticoid receptora. Nuclear receptor are the slowest acting receptors.b. The only nuclear receptor in the options is mineralocorticoid receptors.', 'role': 'assistant'}]