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': 'Nitrate causes all of the following EXCEPT: \nSelect and explain. \nA. Decrease in heart size, B. Increase in cardiac work, C. Preload reduction, D. Dilatation of cutaneous blood vessels', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]