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: Which enzyme uses FAD as a coenzyme? 
 Options:  <1> Isocitrate dehydrogenase. <2> Glucose 6-phosphate dehydrogenase. <3> Succinate dehydrogenase. <4> Malate dehydrogenase. <5> Lactate dehydrogenase.

Ex Output:
3


Ex Input:
Question: Which of the following moments of the electrocardiogram corresponds to the depolarization stage of the ventricular myocardium ?: 
 Options:  <1> Onda P. <2> Onda T. <3> Segment T-P. <4> Segment P-Q. <5> QRS wave.

Ex Output:
5


Ex Input:
Question: Only one of the following cell types synthesizes interleukin IL-12; which one?: 
 Options:  <1> Cytotoxic T lymphocytes. <2> NK cells. <3> Myeloid dendritic cells. <4> Helper T lymphocytes. <5> Endothelial cells

Ex Output:

3