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: The square of Pearson's correlation coefficient is: 
 Options:  <1> The coefficient of variation. <2> The coefficient of determination. <3> The slope of the regression line. <4> The regression coefficient. <5> The covariance.

Output: 2


Input: Consider Input: Question: A 17-year-old boy referred to a health center referring to a 39-degree fever of 48 hours of evolution with a sore throat. The family doctor consults the history of the patient where it does not cost any previous illness. The patient did not report cough and the examination performed by his family doctor reveals the presence of bilateral whitish tonsillar exudate and anterior cervical adenopathies enlarged and painful on palpation. What would be the treatment of choice for this patient? 
 Options:  <1> Penicillin V or amoxicillin. <2> Amoxicillin clavulanic. <3> Doxycycline <4> Ciprofloxacin <5> Metronidazole

Output: 1


Input: Consider Input: Question: For the analysis of traces of inorganic constituents, in samples of organic nature, a preliminary treatment of the sample is needed, which normally consists of: 
 Options:  <1> Dissolve the sample in cold water. <2> Dissolve the sample in hot water. <3> Dissolve the sample between 30 and 70 ºC. <4> Heat the sample between 400 and 700 ºC. <5> Heat the sample in 0.1 M hydrochloric acid.


Output: 4