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
Hoarseness of voice occurs early in - 
Select and explain. 
A. Glottic Ca, B. Subglottic Ca, C. Supraglottic, D. None
A: Glottic Ca
Answer: A: Glottic Ca 
Explanation: None