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: A basic component of spectrophotometers is the monochromator. Its function is: 
 Options:  <0> Connect the different wavelengths from the source to achieve greater light power. <1> Transform the optical signal measured by the detector into an electrical signal. <2> Disperse the light separating the wavelengths that compose it and select a narrow band. <3> Amplify the analytical signal by improving the signal-to-noise ratio. <4> Decrease the power of the light beam to eliminate the background noise of the spectrophotometer.
[A]: chemistry


[Q]: Question: Among the rules of administration of Parenteral Nutrition, which is true: 
 Options:  <0> The route of administration of NP can be used to perform blood extractions. <1> The NP bag can be kept out of the refrigerator until it is administered. <2> The administration of other intravenous medications can be done through the same route as the NP. <3> The nutrient solution may be exposed to light. <4> The infusion will be done at a constant rate during the 24 hours.
[A]: nursery


[Q]: Question: The Wittig reaction is one of the most important processes to obtain: 
 Options:  <0> Alquenos <1> Alcanes. <2> Ketones <3> Ethers <4> Nitriles
[A]:
chemistry