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 most common and earliest manifestation of carcinoma of the glottis is: 
Select and explain. 
A. Stridor, B. Hoarseness, C. Haemoptysis, D. Cervical lymph nodes
B: Hoarseness
Answer: B: Hoarseness 
Explanation: Patients with glottis cancer, or cancer that grows on the true vocal cords, often presents first with hoarseness. This occurs because even a slight interference with the vibrating function of the vocal cords can produce voice changes. Hence, any long-standing hoarseness or voice changes should prompt a laryngeal examination. If hoarseness is ignored or if advanced disease occurs, airway obstruction, pain, or difficulty swallowing can result.