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 limit of bacterial endotoxins established by the European Pharmacopoeia for water for injection is: 
 Options:  <1> 0.25 IU / ml. <2> 0.10 IU / ml. <3> 0 IU / ml. <4> 0.22 IU / ml. <5> 0.15 IU / ml.
