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: Of the following pairs of surface molecules, what is used by the virgin T lymphocytes to extravasate to the lymph node? 
 Options:  <1> CCR7 and L-selectin. <2> VCAM and L-selectin. <3> CCR7 and ICAM-1. <4> CCR9 and L-selectin. <5> CCR4 and VCAM-1.

Ex Output:
1


Ex Input:
Question: They send efferent projections from the cerebellar cortex the: 
 Options:  <1> Purkinje cells. <2> Climbing fibers <3> Granular cells. <4> Horizontal cells. <5> Mossy fibers.

Ex Output:
1


Ex Input:
Question: Analyzing several DNA polymerases involved in the replication of E. coli, one of them was found that had low processivity and low synthesis speed, what enzyme could be treated ?: 
 Options:  <1> DNA pol I. <2> DNA B. <3> DNA pol III. <4> Primasa. <5> DNA gyrase.

Ex Output:

1