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: ENT
The commonest cause of hoarseness of voice in elderly man of more than 3 months duration- 
Select and explain. 
A. Cancer larynx, B. Chronic bronchitis, C. Acute laryngitis, D. Nodular goitre
A: Cancer larynx
Answer: A: Cancer larynx 
Explanation: None