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: The activation of arterial baroreceptors causes: 
 Options:  <1> Stimulation of the bulbar pressure center. <2> Activation of the parasympathetic. <3> Increased blood pressure. <4> Tachycardia. <5> Positive inotropic effect.
2

Question: It is an oncogen: 
 Options:  <1> NF1 <2> P53 <3> RB <4> cMYC. <5> WT1.
4

Question: Different cytokines induce the isotype change of the different classes of antibodies. Of the following cytokine / isotype pairs, choose the correct one: 
 Options:  <1> IL-4 / IgE. <2> IL-4 / IgM. <3> IL-5 / IgG. <4> IFN- / IgM. <5> TGF- / IgA.

1