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: In the presence of a patient with suspected blistering pemphigoid, which of the following tests should we perform to confirm the diagnosis? 
 Options:  <0> Dermatoscopy. <1> Cultivation of the contents of a blister. <2> Skin biopsy for culture. <3> Skin biopsy for histological study and direct immunofluorescence. <4> Analytical with determination of antinuclear and anti DNA antibodies.
[A]: medicine


[Q]: Question: Indicate which of the following options does NOT suppose a normal response of the child's motor development in its first year of life: 
 Options:  <0> By 3 months, he is able to hold his head when he is incorporated. <1> By 4 months, the trunk begins to straighten up although the balance is still immature. <2> By 8 months, he dominates the sitting position and frees his hands to hold objects while maintaining balance. <3> Towards 10 months, start some steps. <4> By 12 months, the act of running appears.
[A]: nursery


[Q]: Question: After ventricular systole, the volume of blood in the ventricle is: 
 Options:  <0> Zero. <1> The telesistolic. <2> The systolic. <3> The end-diastolic. <4> Greater in the right ventricle than in the left.
[A]:
biology