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
Which one of the following condition is considered to be definitely precancerous in the larynx - 
Select and explain. 
A. Vocal nodules, B. Angioma of vocal cords, C. Leukoplakia, D. None of the above
C: Leukoplakia
Answer: C: Leukoplakia 
Explanation: None