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.

Input: Consider Input: Question: The lithium aluminum hydride reacts with the carboxylic acids to give: 
 Options:  <0> Esters. <1> Ketones <2> Tertiary alcohols. <3> Secondary alcohols <4> Primary alcohols.

Output: chemistry


Input: Consider 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.

Output: medicine


Input: Consider Input: Question: The lithium dialkyl-heptarate reacts with alkyl halides to produce, by formation of carbon-carbon bonds between the alkyl group of the halide and the alkyl group of the dialkyl acetate: 
 Options:  <0> Alcanes. <1> Alquenos <2> Alquinos. <3> Aromatics <4> Piranos.


Output: chemistry