Laryngeal oedema is usually confined to the larynx above the vocal folds because
(A)there are numerous mucous glands in the vestibular folds. (B)the mucosa covering the vocal folds is tightly attached to underlying tissues. (C)fluid will drain rapidly into the thorax below the vocal folds. (D)the mucosa above the vocal folds is more vascular than that below the vocal folds.
B