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'.
--------
Question: Question: The oxygen of the ethers as that of the alcohols can be protonated to generate: 
 Options:  <1> Iminium ion. <2> Alkaloxonium ions. <3> Peroxides <4> Piranos. <5> Enaminas

Answer: 2


Question: Question: The following may occur in multimeric form associated with the J chain: 
 Options:  <1> IgA and IgG. <2> IgD and IgM, <3> IdE and IgD. <4> IgA and IgD. <5> IgA and IgM.

Answer: 5


Question: Question: In an evaluation the redox indicator In (ox) + ne-  In (network) is used, whose normal potential is E0. The color change will occur: 
 Options:  <1> To the potential of the equivalence point. <2> To the value of E0. <3> In the interval E0  0.059 / n. <4> In the interval E0 (ox) - E0 (network) if it is evaluated with a reducer. <5> At the potential of 0.059 / n.

Answer:
3