In the following question, select the related letter pair from the given alternatives.
CO: XJ :: ?

Correct option is A

Let's solve it using the given logic of -5, -5 for each letter in the pair.
CO : XJ
· C to X: Move backward 5 places in the alphabet from C (3rd position), arriving at X (24th position).
· to J: Move backward 5 places from O (15th position), arriving at J (10th position).
Now, applying the same logic (-5, -5) to the options:
(a) EQ : ZL
· E (5th position) backward by 5 gives Z (26th position).
· Q (17th position) backward by 5 gives L (12th position).
Therefore, the correct answer is (a) EQ : ZL.