Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::?
# : KMR :: BDI : %
1
# = DFK; % = IKP
2
# = DFK; % = IMP
3
# = EFK; % = IKP
4
# = DFK; % = IKO