During the Oropharyngeal Phase of Swallowing, Food Is Prevented from

During the oropharyngeal phase of swallowing, food is prevented from

A) reentering the mouth by elevation of the uvula
B) entering the nasal passages by closure of the nasopharyngeal sphincter
C) entering the trachea primarily by the epiglottis blocking the opening between the vocal cords
D) reentering the mouth by elevation of the uvula and entering the trachea primarily by the epiglottis blocking the opening between the vocal cords
E) none of these