In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Q: Question: In the digestive system, the vagus:
Options: <1> Stimulates the contraction of the cardia. <2> The gastro-colic reflex mediates. <3> Decreases the secretion of gastric acid. <4> Inhibits the secretion of pancreatic bicarbonate. <5> It is not choralgogo.
A:
2