In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

[EX Q]: Question: In which part of the cell is ribosomal RNA synthesized ?: 
 Options:  <0> Nucleolus <1> Ribosomes. <2> Vacuolas <3> Golgi apparatus. <4> Endoplasmic reticulum.
[EX A]: chemistry

[EX Q]: Question: When in a laboratory report we observed that the patient presents an increase in the concentration of transferrin with a decrease in its saturation, we can think of: 
 Options:  <0> Pernicious anemia. <1> Sickle-cell anaemia. <2> Thalassemia major. <3> Hereditary spherocytosis. <4> Anemia due to iron deficiency.
[EX A]: pharmacology

[EX Q]: Question: When carrying out the validation of an analytical method it is necessary to take into account the following basic aspects: 
 Options:  <0> Validate the analytical process as a whole, the range of concentrations in which it is applied, as well as the method in a single matrix to ensure selectivity. <1> Validate the previous stages of treatment of the sample, the range of concentrations in which it is applied and the method in a single matrix to ensure the selectivity. <2> Validate the final measurement method, validate the range of low concentrations (traces) in which it is applied and the method in a single matrix to ensure sensitivity. <3> All that is required is to validate the instrumentation by means of suitable calibrations. <4> Validate the analytical process as a whole, the concentration interval in which it is applied and the method in each of the matrices to which it will be applied.
[EX A]:
chemistry