A patient is recovering after a cerebrovascular accident (CVA). The patient is at risk for aspiration. To assess when the patient is ready for a liquid diet, the nurse assesses the patient's swallowing ability at each meal. This assessment evaluates:
A. cranial nerves I and II.
B. cranial nerves III and V.
C. cranial nerves VI and VIII.
D. cranial nerves IX and X.