In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

[EX Q]: Question: Statins are used to reduce cholesterol levels and act as analogs of the transition state of an enzyme involved in its biosynthesis. What enzyme is it?
Options: <1> 14-Alpha-demethylase. <2> Hydroxymethylglutaryl coenzyme A (HMGCoA) reductase. <3> Cyclooxygenase 2 (COX-2). <4> Squalene epoxidase. <5> Aromatase
[EX A]: 2

[EX Q]: Question: It has a recessive inheritance linked to the X chromosome the:
Options: <1> Acatalasemia <2> Hemophilia A. <3> Rett syndrome. <4> Cystic fibrosis, <5> Hypophosphatemia
[EX A]: 2

[EX Q]: 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: <1> Ascertainment. <2> Rationalization. <3> Reinsurance. <4> Ritualization <5> Testing.
[EX A]:
3