SSC CGL 21-August-2017 Reasoning question 5

Select the odd letters from the given alternatives
Options:
Options:
1) EGI
2) MOQ
3) UWY
4) NLJ
Correct Answer: NLJ
Solution:
let A=1, B=2 and so on..
1. 5 7 9
2. 13 15 17
3. 21 23 25
4. 14 12 10

1, 2 and 3 each have difference of 2 but not 4th option.