instruction:
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.
question:
Question: In HPLC and under ideal conditions, the chromatographic peaks should have the shape of Gaussian peaks with perfect symmetry, although in reality, the peaks are not perfectly symmetrical and can present fronts and tails. The asymmetry factor: 
 Options:  <0> It is used to measure the relative retention of the two components of a sample so that in perfectly symmetrical compounds it is 0. <1> It is used to measure the degree of symmetry of a peak and is defined at the peak width corresponding to 10% of the peak height. <2> It is a parameter that is calculated by measuring the width at the half-height of the chromatographic peak. <3> It relates to each other two successive chromatographic peaks, so that an asymmetry factor 1 indicates a total resolution of them. <4> It is a parameter related to the symmetry of the peaks, defined at a height equal to 10% of the width thereof.
answer:
chemistry


question:
Question: The most important causative agents of cervical cancer are: 
 Options:  <0> Papilomavirus. <1> Polyomavirus <2> Retrovirus. <3> Cytomegalovirus. <4> Parvovirus.
answer:
biology


question:
Question: A 70-year-old man should undergo cataract extraction surgery. He has a mitral mechanical prosthesis for 10 years and is being treated with acenocoumarol. The electrocardiogram shows a sinus rhythm. Which of the following recommendations do you find most appropriate? 
 Options:  <0> Perform eye surgery without stopping acenocoumarol. <1> Suspend acenocoumarol 5 days before surgery and restart it the day after it. <2> Suspend acenocoumarol 5 days before surgery, start low molecular weight heparin 3 days before surgery and suspend it 24 hours before surgery. <3> Suspend acenocoumarol 1 day before the intervention and use fresh frozen plasma during it. <4> Suspend acenocoumarol 1 day before the intervention and give vitamin K just before it.
answer:

medicine