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: In relation to the physiology of the complement system, one of the following statements is false:
Options: <0> Most of its components are inactive. <1> Its mode of activation is similar to the coagulation cascade. <2> It is subject to strict control of regulatory mechanisms. <3> It is only activated by two different routes: the classical and the alternative. <4> During its activation, multimolecular complexes are formed.
[A]: pharmacology

[Q]: Question: Question linked to image n15 A 67-year-old patient who reported a decrease in unilateral visual acuity and rapidly evolving metamorphopsia. The attached retinography presents the image of the affected eye. The most likely diagnosis would be:
Options: <0> Macular degeneration associated with exudative age. <1> Retinal detachment. <2> Retinitis pigmentosa <3> Central vein thrombosis of the ischemic retina. <4> Equatorial choroidal melanoma.
[A]: medicine

[Q]: Question: Reactions that use copper (I) salts as reagents to replace the nitrogen in the diazonium salts are called reactions of:
Options: <0> Sandmeyer <1> Chichibabin <2> Peterson. <3> Gabriel. <4> Diels-Alder.
[A]:
chemistry