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 target of the aminoglycoside antibacterials is the:
Options: <1> DNA polymerase <2> Transpeptidation of peptidoglycan. <3> 30S subunit of the ribosome. <4> RNA polymerase <5> DNA gyrase.

Ex Output:
3

Ex Input:
Question: The transmembrane proteins that bind to intracellular and extracellular proteins are:
Options: <1> Ocludines. <2> Cadherins. <3> Actins. <4> Integrins <5> Desmocolinas.

Ex Output:
4

Ex Input:
Question: What are the cells of the gastric glands that secrete intrinsic factor called ?:
Options: <1> Main. <2> Parietals <3> Mucous <4> Endocrine <5> Cells of the diffuse neuroendocrine system (SNED).

Ex Output:
2