The correct option is
A T
In every row, the first two columns difference starts with 3 and then increases by 1 whereas for last two columns difference starts with 6 and then increases by 2.
Or we can conclude that the difference for last two columns is double of the difference of first two columns.
i.e
Difference of H and K is 3 whereas difference of K and Q is 6.
Since difference between E and J is 5, so missing term would beJ+10=T.
Hence, T replaces question mark.