What Is the Cephalic Phase of Digestion

What is the cephalic phase of digestion?

A) the earliest phase of digestion, when the brain and nervous system prepares the body in anticipation of food
B) the phase when the semi-digested food leaves the stomach and slowly enters the small intestine
C) the phase when the majority of absorption occurs, primarily occurring in the small intestine
D) the final phase of digestion, when the large intestine and rectum prepare the undigested components of food for elimination