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.

[EX Q]: Question: In the valuation of a strong base with a strong acid the pH of the equivalence point: 
 Options:  <0> It depends on the strong base that is valued. <1> It is determined by the excess OH ̄ of the solution. <2> It depends on the strong acid used as a titrant. <3> It is determined by the dissociation of water. <4> It is determined by the excess H + of the solution.
[EX A]: chemistry

[EX 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.
[EX A]: pharmacology

[EX Q]: Question: When caring for a patient who has undergone a supraglottic laryngectomy, you should bear in mind that: 
 Options:  <0> He has lost the ability to speak by extirpation of the true vocal cords. <1> The tracheostomy they have performed will be permanent. <2> You have a risk of bronchoaspiration due to difficulty swallowing. <3> You may have constipation due to cervical dissection. <4> A portion of the larynx has been removed along with a vocal cord.
[EX A]:
nursery