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 compounds has antioxidant action: 
 Options:  <0> Vitamin B. <1> Vitamin D. <2> Vitamin E. <3> All the previous ones <4> None of the above.
[A]: chemistry


[Q]: Question: The analysis by potentiometric redisolution is characterized: 
 Options:  <0> By using the square wave as an element of excitation. <1> Because the redisolution stage is carried out without agitation. <2> Because the reoxidation step is carried out by an oxidizing agent. <3> Because currents are measured in the redisolution stage. <4> Because the redisolution is carried out at constant potential.
[A]: chemistry


[Q]: Question: What action would you take if you notice that in the chamber of the hydraulic seal of a patient's chest drainage, the water rises on inspiration and descends on expiration? 
 Options:  <0> Observe possible system bids. <1> Check the pressure level of the suction gauge. <2> Milk the tubes for obstruction. <3> None, since it is a normal finding. <4> Check that the system is placed horizontally.
[A]:
nursery