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: Acetylsalicylic acid is a compound whose pKa is 3.5. What percentage of a dose of this product can be absorbed in the stomach fasting (pH 1.5)?
Options: <0> Less than 10% <1> Between 10% and 20%. <2> More than 90% <3> Between 20% and 40%. <4> 50%

A: pharmacology
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Q: Question: The hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) by phospholipase C generates the following second messengers:
Options: <0> Inositol 1,4,5-trisphosphate and triacylglycerol. <1> Inositol 1,4, 5-trisphosphate and glycerol. <2> Inositol 1,4, 5-trisphosphate and diacylglycerol. <3> Inositol 4,5-bisphosphate and diacylglycerol. <4> Inositol 4,5-bisphosphate and glycerol.

A: chemistry
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Q: Question: NOT true about Rheumatoid Arthritis:
Options: <0> Early diagnosis, intensive treatment and close control of the disease are essential. <1> Methotrexate is the drug of first choice to control the activity of the disease. <2> The rheumatoid factor is typical of the disease and is a mandatory criterion for diagnosis. <3> The specificity of citrullinated peptide antibodies is very high and has a prognostic value. <4> Biological drugs, such as anti TNF, have revolutionized the treatment.

A:
medicine
****