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: Plasma ICP is more suitable for rapid multielemental analysis than flame atomic absorption methods because: 
 Options:  <0> The linearity interval is not wide, which allows for very sensitive analyzes. <1> The ICP has several possibilities to introduce the sample using different types of nebulizers. <2> They use two photomultiplier tubes, one for the ultraviolet region and the other for the visible one. <3> It has load-coupled silicon solid-state detectors that allow simultaneous monitoring of a large number of lines, reducing analysis time, sample volume and improving detection limits. <4> It is not correct, because with the ICP plasma, multielemental analysis can not be done.
[EX A]: chemistry

[EX Q]: Question: The valvulopathy that triggers an overload of volume in both the left atrium and ventricle is: 
 Options:  <0> Mitral stenosis. <1> Mitral insufficiency <2> Aortic stenosis. <3> Aortic insufficiency <4> Tricuspid insufficiency.
[EX A]: pharmacology

[EX Q]: Question: The ionization source known as Inductive Coupling Plasma used in Elemental Mass Spectrometry, is characterized by: 
 Options:  <0> Generate mostly monatomic ions. <1> Fragment the organic molecules in molecular ions that allow their identification. <2> Be a low energy source. <3> Run at high vacuum. <4> Reach detection limits of the order of mg L-1 for most elements.
[EX A]:
chemistry