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: Medicine
[{'content': 'In haemoptysis blood usually comes from- \nSelect and explain. \nA. Bronchial veins, B. Pulmonary veins, C. Bronchial arteries, D. Pulmonary arteries', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]