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 is defined as: 
 Options:  <1> Error that is committed when a strong base is valued. <2> Error that presents a glass electrode when the medium is very basic. <3> Error that is committed when a strong acid is valued. <4> Error affecting a reference electrode. <5> Own error of liquid membrane electrodes.
