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 following are zoonotic: 
 Options:  <0> Rotavirus. <1> Paramyxovirus. <2> Cytomegalovirus. <3> Arenavirus. <4> Parvovirus.
[EX A]: biology

[EX Q]: Question: Isopropyl alcohol is prepared from petroleum by hydration of: 
 Options:  <0> Isobutene <1> Eteno <2> Penteno <3> Buteno. <4> Propene
[EX A]: chemistry

[EX Q]: Question: A 68-year-old patient has a tumor mass diagnosed of small cell lung carcinoma in the right main bronchus at 1 cm from the tracheal carina. Mediastinoscopy shows contralateral adenopathies that are positive. The recommended treatment would be: 
 Options:  <0> Chemotherapy with right pneumonectomy. <1> Surgery and subsequent radiotherapy of all affected ganglion chains. <2> Right pneumonectomy and posterior chemotherapy. <3> Chemotherapy and radiotherapy. <4> Radiotherapy.
[EX A]:
medicine