Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
RAS, UFR, XKQ, APP, DUO, GZN, ?
1
OPS
2
JEM
3
KYM
4
KFN
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
RAS, UFR, XKQ, APP, DUO, GZN, ?