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 dipicolinic acid is:
Options: <1> One of the first antibiotics of the quinolones group. <2> A compound characteristic of bacterial endospores. <3> A reserve compound present in the metachromatic corpuscles. <4> An acid polysaccharide present in the wall of Gram positive. <5> One of the amino acids of Gram negative peptidoglycan.
Example Output: 2

Example 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.
Example Output: 2

Example Input: Question: In the treatment with progestogens, a significant number of adverse effects occur. Of those listed below, the most serious is:
Options: <1> Liver failure. <2> Thromboembolic disease. <3> Respiratory insufficiency. <4> Depression. <5> Heart failure.
Example Output:
2