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: The p53 factor induces: 
 Options:  <0> Survival. <1> Proliferation. <2> Senescence <3> Apoptosis <4> Increase.
[EX A]: biology

[EX Q]: Question: A parameter of great importance in chromatography is the equivalent height of theoretical plate (H). The van Deemter equation describes the behavior of a filler column for gas-liquid chromatography, where H = A + (B / u) + Cu, so that: 
 Options:  <0> C is the parameter that is taken as a measure of the quality of the filling of the column. <1> A is the coefficient that collects the contribution of longitudinal diffusion. <2> B is the parameter that is related to the resistance to the transfer of matter that opposes the stationary phase. <3> u is the linear velocity of the mobile phase. <4> B is canceled in columns without filling.
[EX A]: chemistry

[EX Q]: Question: Stimulates lipogenesis and glycogen synthesis: 
 Options:  <0> Insulin. <1> Glucagon. <2> Cortisol <3> Adrenalin. <4> GH
[EX A]:
biology