Select the option which is related to the third letter-group in the same way as the second letter-group is related to the first letter-group. SXK : PTF :: JTR : ?

Option 1 : GPM

The position values of the letters, according to the English alphabet series:

[ alt="Positional value Table" src="//storage.googleapis.com/tb-img/production/22/06/Positional%20value_Table.png" style="width: 490px; height: 103px;">

LOGIC: The letters are decreased by 3, 4, and 5 respectively.

The pattern followed here is:

[ alt="F4 Engineering Madhuri 15-6-22 D13" src="//storage.googleapis.com/tb-img/production/22/06/F4_%20Engineering_Madhuri_15-6-22_D13.png" style="width: 125px; height: 137px;">

Similarly,

[ alt="F4 Engineering Madhuri 15-6-22 D14" src="//storage.googleapis.com/tb-img/production/22/06/F4_%20Engineering_Madhuri_15-6-22_D14.png" style="width: 123px; height: 139px;">

Hence, the correct answer is  "GPM".