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: If we try to dissolve ammonia in water we observe that: 
 Options:  <1> It is completely soluble. <2> It is not very soluble. <3> It should be poorly soluble, but the solubility increases markedly by acid-base reaction between them, resulting in an acid solution. <4> It should be poorly soluble, but the solubility increases markedly by redox reaction between them, releasing hydrogen. <5> It is very soluble, favored by the formation of hydrogen bonds between the two compounds.
