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.

Example Input: Question: The recommended antibiotic treatment for acute diarrhea caused by Clostridium difficile is: 
 Options:  <0> Administer vancomycin orally. <1> Administer vancomycin intravenously. <2> Administer ciprofloxacin orally. <3> Administer metronidazole orally. <4> Administer rifaximin orally.
Example Output: medicine

Example Input: Question: Echinocandins are antifungal compounds that act by inhibiting: 
 Options:  <0> The synthesis of ergosterol. <1> The synthesis of the cell wall. <2> The synthesis of DNA. <3> The synthesis of proteins. <4> The formation of microtubules.
Example Output: pharmacology

Example Input: Question: A study is conducted to evaluate the relationship between lung cancer and exposure to silica. 400 patients diagnosed with lung cancer are selected from the provincial tumor registry and 400 healthy people are chosen randomly from the population resident in the province. The result of the evaluation of this relationship is OR = 1.67; 95% CI = 1.27 - 2.21. It is true: 
 Options:  <0> There is no relationship between exposure to silica and lung cancer. <1> With this study, the relationship between silica and lung cancer can not be evaluated. <2> It is a randomized experimental study with a positive association between exposure to silica and lung cancer. <3> These data show that there is no statistical significance between exposure to silica and lung cancer. <4> It is a case-control study with a positive association between exposure to silica and lung cancer.
Example Output:
medicine