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: The six-membered cyclic ether with an oxygen atom is called: 
 Options:  <0> Oxolane <1> Oxano <2> Dioxane <3> Oxirano. <4> Oxetano.
answer:
chemistry


question:
Question: The antibiotic tetracycline: 
 Options:  <0> It binds to the 30S subunit and inhibits the binding of aminoacyl-tRNA. <1> Inhibits the peptidyltransferase activity of the 50S ribosomal subunit. <2> It binds to the 50S ribosomal subunit and inhibits translocation. <3> It inhibits the initiation and originates an erroneous reading of the mRNA. <4> It causes premature termination by acting as an analog of the aminoacyl-tRNA.
answer:
pharmacology


question:
Question: The effect of anti-D gammaglobulin given to Rh negative women who have developed an Rh positive fetus is: 
 Options:  <0> Eliminate fetal red blood cells from maternal blood. <1> Destroy the antigens formed by the mother's immune system. <2> Avoid the formation of anti-Rh negative antibodies. <3> Induce the formation of maternal antibodies against fetal antigen. <4> Provide the woman with permanent active immunity.
answer:

nursery