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: The intestinal villi: 
 Options:  <1> They extend throughout the entire intestine. <2> They are not in the large intestine. <3> They are visible only to the electron microscope. <4> They contain only absorbent cells. <5> They lack glasses in their own lamina.
