Select the option that is related to the fourth number in the same way as the first number is related to the second number and the fifth number is related to the sixth number.

AJM : KHY  :: ? : TBC  ::  PKS : QIN

EDV

In this analogy, the position of the corresponding letters is revered and replaced by letters two positions behind them in the alphabet series, such that:

By the same logic, the missing terms is: EDV