instruction:
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.
question:
Question: Regarding benign prostatic hypertrophy, it is NOT true that: 
 Options:  <0> Abdominal ultrasound is a non-invasive method to assess prostate size and post-voiding residual. <1> It can cause increases in PSA levels. <2> Rectal examination is a method to estimate prostate size. <3> Treatment with 5-alpha reductase inhibitors decreases symptoms. <4> It is a precancerous lesion.
answer:
medicine


question:
Question: The non-selective medium commonly used for the growth of gonococcus (Neisseria gonorrhoeae) is: 
 Options:  <0> Chocolate agar. <1> Agar blood. <2> Mannitol saline agar. <3> Nutritious agar <4> MacConkey agar.
answer:
biology


question:
Question: A 7-year-old boy presents a subacute picture of cerebellar ataxia and intracranial hypertension. Magnetic resonance imaging demonstrates an expansive lesion in the cerebellar vérmix that captures contrast and obstructs the fourth ventricle. The most likely diagnosis is: 
 Options:  <0> Meningioma <1> Cerebellar metastasis. <2> Glioblastoma multiforme. <3> Medulloblastoma <4> Lymphoma
answer:

medicine