Medium
Each option is a group of four letters. One group is different from the other three. Find the different group.
Explanation
Explanation
In options A, B and D the letter-position changes follow +4, +2, -4 (cyclically). O-S-V-Q follows +4, +3, -5, so it is different.
PRO TIP
Re-check your working by substituting the answer back into the original question.