Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
HSI, OLO, VEU, CXA, ?
1
KPG
2
JPF
3
KQF
4
JQG
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
HSI, OLO, VEU, CXA, ?