Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
P _ _ F I _ _ R O F _ _ P R O _ _ T P R _ _ I T
1
RPITOFTIOF
2
ROTPIFOFFI
3
ROTPITFIOF
4
ROTIPFTIOF
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
P _ _ F I _ _ R O F _ _ P R O _ _ T P R _ _ I T