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: All the following statements describe characteristics of the peptide link EXCEPT: 
 Options:  <1> It has a trans configuration. <2> It is polar but without charge. <3> It forms a single bond by directly joining the α carbons of adjacent amino acids. <4> It does not present rotation around the link. <5> Is flat.
