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: Unlike receptors of adaptive immunity, those of innate immunity are characterized by: 
 Options:  <1> Have a clonal distribution. <2> Its greatest diversity <3> Be identical in cells of the same lineage. <4> Recognize and react against own molecules. <5> Being only on the cell surface.
