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'.

Input: Consider Input: Question: If you want to study the efficacy and safety of a new cytostatic for a specific oncological process and, at the same time, contrast the efficacy that adds a new monoclonal antibody to this treatment, what would be the most appropriate study design? 
 Options:  <1> Parallel test. <2> Cross test <3> Factorial test. <4> Sequential test. <5> Test of n = 1.

Output: 3


Input: Consider Input: Question: The corpuscles of Pacini: 
 Options:  <1> They are innervated by unmyelinated fibers. <2> They are mechanoreceptors of slow adaptation. <3> They have small receptor fields. <4> They are located in deep areas of the dermis. <5> They are thermoreceptors.

Output: 4


Input: Consider Input: Question: Cardiac output (CG) increases between 40 and 50% during pregnancy. When does it return to normal values? 
 Options:  <1> One week before delivery <2> During labor <3> Seven to ten days after delivery. <4> At the end of the puerperium. <5> At the end of breastfeeding.


Output: 3