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 kidneys secrete the hormone: 
 Options:  <0> Calcitriol. <1> Renina <2> Angiotensin II. <3> Aldosterone <4> Calcitonin
[EX A]: biology

[EX Q]: Question: A 76-year-old woman came to the emergency room referring to pain in the right groin and vomiting for about 6 hours. On examination, a hard consistency tumor is palpable just below the line joining the anterosuperior iliac spine and the pubis (which corresponds to the location of the inguinal ligament). Most likely, it is one: 
 Options:  <0> Direct inguinal hernia. <1> Spiegel hernia. <2> Indirect inguinal hernia. <3> Femoral hernia (crural). <4> Obturator hernia
[EX A]: medicine

[EX Q]: Question: Form B of DNA: 
 Options:  <0> It is formed by a double helix levorotatory with two antiparallel nucleotide chains. <1> It is wider and longer than form A. <2> It has pairs of nitrogenous bases perpendicular to the axis of the helix. <3> Corresponds to dehydrated DNA. <4> It is the minority form presented by DNA under physiological conditions.
[EX A]:
chemistry