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'.

Q: Question: Which of the nucleophiles listed below has a greater reactivity to the bimolecular nucleophilic substitution reaction? 
 Options:  <1> Hydroxide. <2> I last. <3> Ammonia. <4> Water. <5> Acetic acid.

A: 2
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Q: 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.

A: 5
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Q: Question: Fluid bed dryers are recommended for substances: 
 Options:  <1> With high heat of fusion. <2> Free flowing <3> Termolábiles. <4> Insoluble. <5> Permeable to moisture.

A:
3
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