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
Inspiratory stridor is found in what kind of lesions: 
Select and explain. 
A. Supraglottic, B. Subglottic, C. Tracheal, D. Bronchus
A: Supraglottic
Answer: A: Supraglottic 
Explanation: Answer A. SupraglotticGenerally, an inspiratory stridor suggests airway obstruction above the glottis.While an expiratory stridor is indicative of obstruction in the lower trachea.A biphasic stridor suggests a glottic or subglottic lesion.