In each of the following questions, there is a certain relationship between two given numbers on one side of (: :) and one number is given on another side of (: :) where another number is to be found from the given alternatives, having the same relationship with this numbers of the given pair bear. Choose the best alternative.
Doctor : Nurse : : ? : Follower
1) Worker
2) Employer
3) Union
4) Leader

Explanation

3, VI