Select the letter-cluster that can replace the question mark (?) in the following series.
PQST, UVXY, ?, EFHI, JKMN
1
ZABC
2
ZACD
3
ZBCD
4
ZACE
Select the letter-cluster that can replace the question mark (?) in the following series.
PQST, UVXY, ?, EFHI, JKMN