This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oncology, Subject name: Surgery
[{'content': 'Most common symptom of carcinoma bronchus is: \nSelect and explain. \nA. Hemoptysis, B. Dyspnoea, C. Cough, D. Wheezing', 'role': 'user'}, {'content': 'Answer: C \nExplanation: CA Bronchus * M/C symptom - Cough > Dyspnea > chest pain > hemoptysis * MC aery responsible for hemoptysis in CA bronchus- bronchial aeries', 'role': 'assistant'}]