Correct option is A
Given:
KX is coded as LZ.
Logic: 1st +1 and 2nd + 2
K to L: This is ( +1) in the alphabet.
X to Z: This is ( +2) in the alphabet.
From the given options –
Option (a) PS : QU
P + 1 = Q
S + 2 = U
This option follows the same pattern.
Thus, correct option is (a).