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: Interactions between selectins and vascular targeins: 
 Options:  <1> They are very strong. <2> They mediate the first phase of the leukocyte / endothelium adhesion. <3> They are permanent. <4> They mediate firm adhesion to the endothelium. <5> They are very intense in the spleen.
