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: 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: In relation to the physiology of the complement system, one of the following statements is false: 
 Options:  <0> Most of its components are inactive. <1> Its mode of activation is similar to the coagulation cascade. <2> It is subject to strict control of regulatory mechanisms. <3> It is only activated by two different routes: the classical and the alternative. <4> During its activation, multimolecular complexes are formed.
[EX A]: pharmacology

[EX Q]: Question: The difference in solute concentration inside and outside the cell gives rise to an osmotic pressure: 
 Options:  <0> Whose measurement allows to determine molar masses of small molecules. <1> Due to the passage of solute through the cell membrane. <2> That corresponds to the pressure that must be applied to interrupt the passage of solvent through the membrane. <3> That causes a difference of chemical potential of the solvent on both sides of the membrane. <4> Whose effect is minimal and complicated to measure.
[EX A]:
pharmacology