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 eudismic index is a parameter with pharmacological interest that expresses the relationship between: 
 Options:  <1> Two diastereomer drugs. <2> Two bioisostero drugs. <3> Two enantiomers <4> A drug and a prodrug, structural analog. <5> Two structural modifications, one hydrophilic and one lipophilic, of a certain drug.
Example Output: 3

Example Input: Question: Among the criteria of DSM-IV for the diagnosis of Obsessive Compulsive Personality Disorder, are: 
 Options:  <1> A general pattern of concern for order, perfectionism, mental and interpersonal control at the expense of effectiveness, as well as a tendency to delegate to other tasks or work. <2> It shows rigidity and stubbornness, as well as a tendency to squander money. <3> Concern for details, rules, rules, lists, order, organization, schedules, until losing sight of the main objective of the activity. <4> Lax dedication to work and productivity, excluding leisure activities, unscrupulous in matters of morals and ethics. <5> Tendency to get rid of useless objects, even if they have a sentimental value. Miserly style in terms of expenses, both for him and for others.
Example Output: 3

Example Input: Question: Among the characteristic components of the adaptive immune system are: 
 Options:  <1> The epithelial cells. <2> The macrophages. <3> The NK lymphocytes. <4> C-reactive protein <5> The B lymphocytes
Example Output:
5