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': 'True statement regarding inverse agonist is: \nSelect and explain. \nA. Binds to the receptor and causes intended action, B. Binds to the receptor and causes opposite action, C. Binds to the receptor and causes no action, D. Binds to the receptor and causes submaximal action', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]