Given below are two letter-cluster pairs in which the second letter-cluster is related to the first letter-cluster following a certain logic. Select the letter-cluster pair from among the options that follows the same logic.
CPG : PGC
TJM : JMT
1
UQK : QKU
2
UQK : KQU
3
UQK : QKV
4
UQK : QUK