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: Anaesthesia
[{'content': 'True about inhaled nitric oxide \nSelect and explain. \nA. Causes generalized (systemic) vasodilation, B. Dilates pulmonary aeries, C. Causes hypotension, increase pulmonary aery pressure, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e, Dilates pulmonary aeries', 'role': 'assistant'}]