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'.

Example Input: Question: The classical pathway of complement is activated in response to: 
 Options:  <1> Antigen-antibody complexes. <2> Direct binding of C3b to bacterial walls. <3> Microbial glycolipids. <4> Properdin <5> The C-reactive protein.
Example Output: 1

Example Input: Question: Naloxone is used in the treatment of poisoning with: 
 Options:  <1> Opiates <2> Benzodiazepines. <3> Barbiturates <4> Tricyclic antidepressants. <5> Digitálicos.
Example Output: 1

Example Input: Question: The component of the Gram-negative bacteria directly responsible for the endotoxic activity is: 
 Options:  <1> Lipid A. <2> The porinas. <3> The penicillin binding proteins. <4> The O antigen <5> The lipoproteins.
Example Output:
1