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: A characteristic component of murein or peptidoglycan in most bacterial species is: 
 Options:  <1> The dipicolinic acid. <2> L-glutamic acid <3> The D-alanine. <4> The mannosamine. <5> The diaminoglycoside
