Definition: 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'.
Input: Question: The complementary drug protection certificate has a maximum duration of:
Options: <1> Five years. <2> Seven years. <3> Ten years. <4> Fifteen years. <5> Twenty five years.
Output:
1