Definition: 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'.
Input: Question: Inhibits gastrin secretion: 
 Options:  <1> Parasympathetic stimulation. <2> Sight, aroma and taste of the food. <3> Stomach distension <4> Presence of proteins in the stomach. <5> Somatostatin.
