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: In the oxaciclohexane-type conformer of sugar -D - (+) - glucopyranose: 
 Options:  <1> One of the OH- groups is axial, but the remaining substituents are equatorial. <2> The CH2OH group is axial but the remaining groups are equatorial. <3> All groups are axial. <4> All groups are equatorial. <5> The CH2OH group is equatorial but the remaining groups are axial.
[A]: 4


[Q]: Question: The ribosomal subunits are formed in the: 
 Options:  <1> Nucleoplasm. <2> Nucleolus <3> Nuclear sheet. <4> Nuclear pore. <5> Cytoplasm.
[A]: 2


[Q]: Question: It is a costimulatory molecule that is expressed in the antigen-presenting cells: 
 Options:  <1> CD25. <2> CD20. <3> CD42. <4> CD18. <5> CD80.
[A]:
5