Correct option is B
Information Given:
Pairs:
HQL → ISO
DGS → EIV
Logic:
1st letter +1, 2nd letter +2, 3rd letter +3.
Explanation:
Logic: Apply increasing shift.
HQL → ISO
H +1 = I
Q +2 = S
L +3 = O ✔
DGS → EIV
D +1 = E
G +2 = I
S +3 = V ✔
Check options:
A: KFS → SAU
K→S (+8) ✖
B: BIR → CKU
B→C (+1) ✔
I→K (+2) ✔
R→U (+3) ✔
C: BTS → DFG
B→D (+2) ✖
D: MDR → OPS
M→O (+2) ✖
Short Trick:
Check pattern +1, +2, +3 for 1st, 2nd, 3rd letters.
Final Answer:
BIR → CKU
Final Correct Option:
B