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: Acetylsalicylic acid is a compound whose pKa is 3.5. What percentage of a dose of this product can be absorbed in the stomach fasting (pH 1.5)? 
 Options:  <0> Less than 10% <1> Between 10% and 20%. <2> More than 90% <3> Between 20% and 40%. <4> 50%
[EX A]: pharmacology

[EX Q]: Question: The virions of the Arenavirus contain: 
 Options:  <0> A linear single-stranded RNA molecule. <1> Two equal molecules of linear double-stranded RNA. <2> Two different molecules of linear single-stranded RNA. <3> Two distinct molecules of single-stranded circular RNA. <4> Two identical molecules of single-stranded circular RNA.
[EX A]: biology

[EX Q]: Question: The soluble globular proteins are characterized by: 
 Options:  <0> Present aromatic and aliphatic amino acids on its surface. <1> Present an inner apolar core. <2> Being partially deployed giving rise to structures that are not very compact. <3> Present in its interior acidic and basic amino acids. <4> A high degree of hydration inside.
[EX A]:
biology