instruction:
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.
question:
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.
answer:
pharmacology


question:
Question: What are the leaders of the Structural / Strategic School of Systemic Therapy? 
 Options:  <0> O'Hanlon and Weiner-Davis. <1> Haley and Minuchin. <2> Weakland and Fisch. <3> Keeney and Ross. <4> Stierlin and Weber.
answer:
psychology


question:
Question: The black indicator of Eriochrome T (N.E.T.) has the following colors depending on the pH: 
 Options:  <0> H2In¯rojo, HIn2- blue, In3- orange and when complexed with metal it is red. <1> H2In¯azul, HIn2- red, In3- orange and when complexed with metal it is red. <2> H2In¯rojo, HIn2- blue, In3- red wine and when complexed with metal it is orange. <3> H2In-red, HIn2- orange, In3- blue and when complexed with metal it is orange. <4> H2In¯azul, HIn2- orange, In3- red and when complexed with metal is orange.
answer:

pharmacology