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: When comparing the characteristics of pragmatic or confirmatory clinical studies with explanatory or exploratory clinical studies, which of the following is an advantage of the former? 
 Options:  <1> Information about subgroups of patients representative of the usual clinical practice. <2> Very homogeneous sample, with little variability. <3> Greater capacity to detect differences in the effectiveness of interventions. <4> Greater internal validity <5> Smaller sample size

Ex Output:
1


Ex Input:
Question: If a sample of size 100 has a standard deviation of 10, its typical error is: 
 Options:  <1> 10 <2> 100 <3> 0.1 <4> one. <5> There is not enough data to calculate it.

Ex Output:
4


Ex Input:
Question: Mycobacterium tuberculosis complex includes the bacillus that causes human tuberculosis (Mycobacterium tuberculosis hominis, Koch's bacillus), as well as other mycobacteria, among which are the following, except one: 
 Options:  <1> Mycobacterium bovis. <2> Mycobacterium africanum. <3> Bacillus Calmette-Guerin (BCG). <4> Mycobacterium microti. <5> Mycobacterium avium-intracellulare.

Ex Output:

5