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: Radiology
[{'content': 'A 40 years old man presents with a recurrent hemoptysis and purulent cough. X-ray was found to be normal. To next investigation done to aid in diagnosis is : \nSelect and explain. \nA. MRI, B. Bronchoscopy, C. HRCT, D. CT guided biopsy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Bronchoscopy As a rule, you can remember, for almost all cases of hemoptysis the investigation of choice is Bronchoscopy followed by HRCT; Except for hemoptysis associated with parenchymal (interstitial) lung disease where investigatim of choice is HRCT> Bronchoscopy, and in suspected bronchitis where you observe and wait for recurrence for performing Bronchoscopy.', 'role': 'assistant'}]