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'.

[EX Q]: Question: Reactions in which there are no intermediates are described as: 
 Options:  <1> Concerted. <2> Polar <3> Radicals <4> Homolitic <5> Heterolithic
[EX A]: 1

[EX Q]: Question: In relation to the consumption of dietary fiber, it is true that: 
 Options:  <1> It must be balanced (25% soluble and 75% insoluble, approximately). <2> The higher the consumption of fiber, the lower the water intake. <3> The products made with refined seeds have a high fiber content. <4> Legumes are a poor source of fiber. <5> In the adult, 10-15 g of fiber are recommended daily.
[EX A]: 1

[EX Q]: Question: What is the PCNA or nuclear cell proliferation antigen? 
 Options:  <1> It is a protein that prevents the double helix from forming in the replication bubble. <2> It is a protein that increases the ability to replicate long fragments of eukaryotic DNA polymerase. <3> It is the protein responsible for the elimination of positive superhelices. <4> It is the typical conformation of the DNA double helix in eukaryotes. <5> It is the enzyme responsible for copying the DNA of the telomeres.
[EX A]:
2