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: Which of the following is currently the only contraindication for conservative surgical treatment in breast cancer? 
 Options:  <0> Prior radiotherapy. <1> Tumor of 4 cm. <2> Axillary metastasis. <3> Multifocal tumor <4> Pregnancy of 32 weeks.
[A]: medicine


[Q]: Question: A pregnant woman of 31 weeks goes to the emergency department referring loss of fluid through the vagina. Objective speculum exploration of clear fluid through the external cervical os. It is apyletic. The cardiotocographic record does not reveal contractions and the fetal heart rate is normal. The ultrasound scan reveals no malformations and the cervix is ​​not shortened. What therapeutic combination would it indicate? 
 Options:  <0> Tocolytics, corticosteroids and antibiotics. <1> Tocolytics and antibiotics. <2> Tocolytics and corticosteroids. <3> Oxytocin, corticosteroids and antibiotics. <4> Corticosteroids and antibiotics
[A]: medicine


[Q]: Question: The chemistry of diazonium salts provides the main synthetic method for preparing aryl fluorides by a process called: 
 Options:  <0> Reorganization of Claisen. <1> Gabriel's reaction. <2> Diazotization reaction. <3> Sandmeyer reaction. <4> Schiemann reaction.
[A]:
chemistry