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
A young patient of 30 yrs male presents with recurrent hemoptysis. On X-Ray no abnormality is seen. Next investigation is. 
Select and explain. 
A. HRCT, B. Spiral CT, C. Helical CT, D. Bronchoscopy
D: Bronchoscopy
Answer: D: Bronchoscopy 
Explanation: D i.e. Bronchoscopy