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: Among all the known adverse effects of platelet agents such as Clopidogrel, which of them are considered less serious ?: 
 Options:  <0> Flu-like syndrome, headache, dizziness and rash or pruritus. <1> Profuse sweating and nausea. <2> Arrhythmia and hypotension. <3> Moderate abdominal pain and headache. <4> Dyspnea and edema in MMII.
[EX A]: nursery

[EX Q]: Question: The most important causative agents of cervical cancer are: 
 Options:  <0> Papilomavirus. <1> Polyomavirus <2> Retrovirus. <3> Cytomegalovirus. <4> Parvovirus.
[EX A]: biology

[EX Q]: Question: Immunoglobulin isotype change affects: 
 Options:  <0> The constant regions of the heavy chains. <1> The constant regions of the light chains. <2> The totality of heavy chains. <3> The entire immunoglobulin molecule. <4> The hypervariable regions of the heavy chains.
[EX A]:
biology