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: The mitochondrial genome: 
 Options:  <0> It is circular. <1> It is single-strand. <2> It encodes all mitochondrial proteins. <3> It is part of the nuclear DNA. <4> None of the above.

A: chemistry
****
Q: Question: For self-registration to become an effective tool for clinical evaluation, it must meet the requirements of: 
 Options:  <0> Have a complete design that includes each of the significant units of a complex behavior and its memory. <1> Have a simple design, without sophistication or complexity, and always accompanied by a prior training for its completion. <2> Do not limit your compliance to the events that occurred at the time but also to the memory that you have of them at later moments. <3> Cover each and every one of the behaviors problems identified by the client. <4> Be completed by a significant person who knows the client well.

A:
psychology
****