Which of the Following Can Occur in Disorders of the Oral

Which of the following can occur in disorders of the oral preparation/oral phase of swallowing?

A) Residue on the esophageal walls can result in infection and nutritional problems.
B) If the swallow is not triggered or is delayed, material may be aspirated.
C) Insufficient saliva impedes adequate bolus formation.
D) Poor tongue mobility may result in insufficient pressure in the pharynx.