Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
FCC, UFH, OIS, LLX, FOC, ?
1
TRF
2
VSG
3
URH
4
WTH
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
FCC, UFH, OIS, LLX, FOC, ?