Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
SHD, TKI, UNN, VQS, ?
1
XYZ
2
WTX
3
XTW
4
WUX
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
SHD, TKI, UNN, VQS, ?