Task: Question Answering
Input (English): 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.
Output (English): 1