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
True about inhaled nitric oxide 
Select and explain. 
A. Causes generalized (systemic) vasodilation, B. Dilates pulmonary aeries, C. Causes hypotension, increase pulmonary aery pressure, D. All
B: Dilates pulmonary aeries
Answer: B: Dilates pulmonary aeries 
Explanation: B i.e, Dilates pulmonary aeries