In the following question, select the related letters from the given alternatives.
JN : QU : : DH : ?
ALK
BLM
CKO
DYA
ALK
BLM
CKO
DYA
Related Questions:
Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.
8 : 12 :: 6 : ? :: 10 : 15