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: Which of the following medications is an anti CD20 monoclonal antibody used in the treatment of rheumatoid arthritis? 
 Options:  <1> Alemtuzumab <2> Muromunab. <3> Abalizumab <4> Rituximab <5> Visilizumab.
Example Output: 4

Example Input: Question: In response to an increase in the concentration of adrenaline and circulating glucagon: 
 Options:  <1> It activates the phosphorylation of glycogen phosphorylase and the degradation of glycogen. <2> It increases the intracellular concentration of cAMP, and therefore, the synthesis of glycogen. <3> It decreases the intracellular concentration of cAMP and the degradation of glycogen. <4> The phosphorylation of glycogen synthase and glycogen synthesis is activated. <5> Increases the intracellular concentration of ATP and glycogenesis.
Example Output: 1

Example Input: Question: The repeated sequence of human telomeres is: 
 Options:  <1> 5'-GGGATT-3'. <2> 3'-CCCTAA-5'. <3> 5'-CCCCAA-5 '. <4> 5'-CCTTAA-3. <5> 5'-CCCTAA-3 '.
Example Output:
5