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': 'All are produced by la receptors except - \nSelect and explain. \nA. Euphoria, B. Sedation, C. Dysphoria, D. Constipation', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Dysphoria", 'role': 'assistant'}]