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 centrifuging human peripheral blood in a density gradient in Ficoll: 
 Options:  <1> The mononuclear cells float on the Ficoll. <2> The lymphocytes remain in the background. <3> The erythrocytes float on the Ficoll. <4> The granulocytes float on the Ficoll. <5> The monocytes remain in the background.

Ex Output:
1


Ex Input:
Question: Free samples of industrially manufactured medicines are considered exceptional publicity; as such, they will only be delivered during a maximum time of: 
 Options:  <1> One year from the date of authorization of the medication. <2> Five years from the date of authorization of the medication. <3> Six months from the date of authorization of the medication. <4> Two years from the date of authorization of the medication. <5> One month from the date of authorization of the medication.

Ex Output:
4


Ex Input:
Question: A child must be taught to be more autonomous and learn to eat without help. If he first learns to hold a spoon, then to grab some puree and is finally able to take it to his mouth, and the parents congratulate him, it means that they have used positive reinforcement and the technique of successive approximations. This technique is also called: 
 Options:  <1> Learning by observation. <2> Molding <3> Vicarial learning. <4> Reward. <5> Training with emission.

Ex Output:

2