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 alkaline error in the glass electrode is due to 
 Options:  <1> The membrane responds to other anions besides the hydroxyl ion. <2> The membrane responds to other anions besides the hydrogen ion. <3> The membrane responds to other cations in addition to the hydrogen ion. <4> That the pH is higher than it really is. <5> This error is not described for the glass electrode.
