The Term "Food Coma" Is Often Used to Describe the Pleasant

The term "food coma" is often used to describe the pleasant, lethargic feeling people have after eating a big meal. Which of the following mediates that effect?

A) Increased activation of the sympathetic nervous system
B) Increased activation of the parasympathetic nervous system
C) Increased activation of the nucleus accumbens
D) Increased activation of the hippocampus