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: In the oxaciclohexane-type conformer of sugar -D - (+) - glucopyranose: 
 Options:  <0> One of the OH- groups is axial, but the remaining substituents are equatorial. <1> The CH2OH group is axial but the remaining groups are equatorial. <2> All groups are axial. <3> All groups are equatorial. <4> The CH2OH group is equatorial but the remaining groups are axial.
[EX A]: chemistry

[EX Q]: Question: Question linked to the image nº15 Patient of 25 years of age transferred to the Rescue Box of the Emergency Service after traffic accident. At admission, he is hypotensive, tachycardic and tachypneic. Portable chest radiography shows right costal fractures from the fourth costal arch to the ninth and right pulmonary contusion image, and the pelvis is attached. What is the best behavior next? 
 Options:  <0> Perform abdominal ultrasound in the emergency box. <1> Request a chest computed tomography. <2> Request pelvic angiography. <3> Request computed tomography of the abdomen and pelvis. <4> Immediately enter the patient in the intensive care unit.
[EX A]: medicine

[EX Q]: Question: The most frequent malignant tumor of the submaxillary gland is: 
 Options:  <0> Mucoepidermoid carcinoma. <1> Carcinoma ex-pleomorphic adenoma. <2> Lymphoma <3> Cylindroma or cystic adenoid carcinoma. <4> Papillomatous cystadedenolymphoma.
[EX A]:
medicine