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: Indicate which of the following statements is true about bilirubin: 
 Options:  <0> It is a catabolic product of the heme group. <1> It is a product of the urea cycle. <2> It is an intermediary of the Krebs cycle. <3> It is a precursor of hepatic gluconeogenesis. <4> It is a product of cholesterol degradation.
[A]: chemistry


[Q]: Question: Iron deficiency anemia is treated with oral or parenteral preparations: 
 Options:  <0> Only ferrous salts should be used orally. <1> Only ferric salts should be used orally. <2> Orally, the most appropriate form is the iron-dextran complex. <3> Orally, the treatment should last a maximum of fifteen days. <4> Only ferrous salts should be used parenterally.
[A]: pharmacology


[Q]: Question: Which of the following products of the degradation of triacylglycerols and subsequent oxidation can undergo gluconeogenesis? 
 Options:  <0> Propionyl CoA. <1> Acetyl CoA <2> All the ketone bodies. <3> Some amino acids <4> -Hydroxybutyrate.
[A]:
chemistry