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.

[Q]: Question: How many chromosomes would a male with nulisomy have for chromosomes 17 and 18? 
 Options:  <0> 43 <1> Four. Five. <2> 44 <3> 42 <4> 40
[A]: biology


[Q]: Question: Question linked to the image nº4 34-year-old man, athlete, who presents a picture of oppressive, continuous chest pain radiating to the back that is accentuated with deep inspiration, of 4 days of evolution, without fever. It refers to a picture of tonsillitis 2 months ago. Rhythmic cardiac auscultation without murmurs. It does not present data of hemodynamic alteration or heart failure. Normal analytical, except for discrete leukocytosis. When you arrive at the emergency room, an ECG is performed, shown in the figure. While waiting for the result of markers of myocardial injury, the most likely diagnosis in this patient is: 
 Options:  <0> Subacute myocardial infarction anteroseptal. <1> Tietze syndrome. <2> Osteomuscular thoracic pain with athlete's ECG. <3> Acute pericarditis <4> Unstable angina.
[A]: medicine


[Q]: Question: In neurons once an action potential has started, a second action potential can not be triggered for a short period of time, regardless of the intensity of the stimulus applied. This period of time is known as: 
 Options:  <0> Synaptic delay. <1> Threshold depolarizing period. <2> Absolute refractory period. <3> Relative refractory period. <4> Spatial sumary.
[A]:
nursery