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: Which of the following is a more reliable marker of malnutrition in the elderly patient? 
 Options:  <0> Weight loss of 1 kg in the last month. <1> Body mass index greater than 24. <2> Difficulty swallowing, chewing and / or lack of appetite. <3> Albumin 4.5 gr / dl. <4> Mini Nutritional Assessment less than 17.
[A]: medicine


[Q]: Question: Indicate which of the following safety precautions used in the care of the patient receiving brachytherapy is NOT true: 
 Options:  <0> Single room. <1> Prohibition of visits of children. <2> Radiation meters for health personnel. <3> Reverse isolation. <4> Limitation of the time of the visits.
[A]: nursery


[Q]: Question: It is completely oxidized in the citric acid cycle: 
 Options:  <0> -ketoglutarate. <1> Succinate <2> Citrate. <3> Acetyl-CoA. <4> Oxalacetate.
[A]:
biology