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 Input:
Question: The folded sheet :
Options: <1> It is formed by a single polypetide chain. <2> It presents a distance between adjacent amino acids of approximately 4 angstroms. <3> It is formed by the union of two or more strands by hydrogen bonds. <4> Presents the side chains of contiguous amino acids pointing to the same side. <5> They are of two types: parallel, where the chains of the sheet go in a different direction and antiparallel, where they go in the same direction.

Ex Output:
3

Ex Input:
Question: The microbiocidal action of iodine and chlorine and many of its derivatives is due to:
Options: <1> They are oxidizing agents. <2> They bind specifically to the active centers of the enzymes. <3> They bind specifically to ribosomal proteins. <4> They induce pores in the membranes. <5> They cause the dissolution of membrane phospholipids.

Ex Output:
1

Ex Input:
Question: Many of the properties of liquid chromatography (HPLC) and capillary electrophoresis (CE) have to do with its flow profile. In this way, the flow profile is:
Options: <1> Laminate in HPLC and turbulent in CE. <2> Straight in CE and turbulent in HPLC. <3> Hyperbolic in EC and parabolic in HPLC. <4> Laminar in CE and electroosmotic in HPLC. <5> Parabolic in HPLC and flat in CE.

Ex Output:
5