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'.

Input: Consider Input: Question: The delirious atmosphere is defined as: 
 Options:  <1> The delirious interpretation of a normal perception. <2> A self-referential idea, of great importance for the patient. <3> Subjective experience that the world has changed in a subtle but sinister, disturbing and difficult or impossible to define way. <4> The delirious construction of a memory. <5> A rational and easily modifiable idea about an environmental issue.

Output: 3


Input: Consider Input: Question: Generates hydrogen peroxide in the phagosome: 
 Options:  <1> Myeloperoxidase <2> Carbonic anhydrase. <3> NADPH oxidase. <4> Cytochrome C oxidase. <5> Superoxide dismutase.

Output: 5


Input: Consider Input: Question: Type I pneumocytes: 
 Options:  <1> They produce surfactant. <2> They give rise to type II pneumocytes. <3> They have a lot of organelles. <4> They are responsible for gas exchange. <5> They are mesenchymal cells.


Output: 4