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: Importin intervenes in the transport of proteins from the cytoplasm to: 
 Options:  <1> Nucleus. <2> Endoplasmic reticulum. <3> Mitochondria. <4> Peroxisome <5> Lysosome
Example Output: 1

Example Input: Question: Ultraviolet radiation changes the structure of DNA by: 
 Options:  <1> Rupture of phosphodiester bonds. <2> Deamination of nitrogenous bases. <3> Depurinization <4> Formation of cyclobutyl rings of pyrimidines. <5> Hydroxylation of nitrogenous bases.
Example Output: 4

Example Input: Question: The aminotransferases: 
 Options:  <1> They participate only in the synthesis of amino acids. <2> They participate only in the degradation of amino acids. <3> They participate in the synthesis and degradation of amino acids. <4> Your heart levels are very low. <5> None of the previous answers is true.
Example Output:
3