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': 'Which of the following is not true about ACE inhibitors? \nSelect and explain. \nA. Used in asthma, B. Increase quality of life, C. Postural hypotension is seen, D. Na level decrease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]