Select the option that is related to the fifth letter-cluster in the same way as the first letter-cluster is related to the second letter-cluster and the third letter-cluster is related to the fourth letter-cluster.
NTLG : UOHM :: PGUR : HQSV : HTPM : ?
1
UJQN
2
UKNR
3
VIQN
4
UINQ