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.

Example Input: Question: The binding of an allosteric activator to an allosteric enzyme typically results in:
Options: <0> Decrease the Vmax. <1> The transition to a less soluble state. <2> Decrease the Km by its substrate. <3> The transition to hyperbolic kinetics. <4> The dissociation of its subunits.
Example Output: chemistry

Example Input: Question: A teenager with obsessive-compulsive disorder phones the Toxicological Information Service to ask if he can safely use an insecticide for cockroaches. What is the name of this escape behavior?
Options: <0> Ascertainment. <1> Rationalization. <2> Reinsurance. <3> Ritualization <4> Testing.
Example Output: psychology

Example Input: Question: Why does carbenicillin have a low antibacterial activity by mouth ?:
Options: <0> It is degraded by beta-lactamases in the digestive system. <1> He undergoes first-pass hepatic oxidative metabolism. <2> It binds covalently to plasma proteins. <3> It is decarboxylated in the acid medium of the stomach giving rise to benzylpenicillin, which is also unstable in that medium. <4> It is highly lipophilic, which is why it is not released correctly from oral administration forms.
Example Output:
pharmacology