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.

Q: Question: The main method for the preparation of ceto esters is the reaction known as:
Options: <0> Malonic synthesis <1> Acetoacetic synthesis. <2> Condensing of Claisen. <3> Perkin reaction. <4> Hofmann reaction.

A: pharmacology
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Q: Question: Inhibin:
Options: <0> Inhibits the secretion of FSH. <1> Blocks the secretion of estrogen. <2> Stimulates the secretion of GnRH. <3> The adenohypophysis produces it. <4> Stimulates the secretion of LH.

A: biology
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Q: Question: Th1 lymphocytes:
Options: <0> They produce interferon gamma (IFN-). <1> They mediate allergic diseases. <2> Activate mast cells <3> They are very active against extracellular bacteria. <4> They recruit neutrophils at the sites of antigen recognition.

A:
biology
****