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: Surgery
Fiberoptic endoscopy is contraindicated in - 
Select and explain. 
A. Children, B. Aneurysm of arch of aoa, C. Cervical spondylosis, D. Hemoptysis
B: Aneurysm of arch of aoa
Answer: B: Aneurysm of arch of aoa 
Explanation: Ans. is 'b' i.e., Aneurysm of arch of aoa