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: What is the maximum volume of air that a subject can breathe out after maximum inspiration ?: 
 Options:  <1> Total lung capacity. <2> Expiratory reserve volume. <3> Inspiratory capacity <4> Vital capacity <5> Residual volume

Ex Output:
4


Ex Input:
Question: The most frequent mechanism that induces the activation of the ABL protooncogene in chronic myeloid leukemia is: 
 Options:  <1> Point mutation <2> Gene amplification. <3> Methylation of the promoter. <4> Deletion <5> Translocation

Ex Output:
5


Ex Input:
Question: In general, viruses that have a naked capsid: 
 Options:  <1> They are stable against drying. <2> They are commonly released from the host cell by budding. <3> They are very sensitive to detergents. <4> They are very sensitive to the conditions in the intestinal tract. <5> They can not be neutralized by host antibodies.

Ex Output:

1