Correct Answer: K – 11 , M – 13

Solution : Given:

C – 3, E – 5, G – 7, I – 9, ?, ?

Here, in the series, the letters and their corresponding positions are written.

Now, let's check the options:

First option: M – 18, K – 14; Letters are not paired with their corresponding positions.

Second option: X – 24, M – 21; Letters are not paired with their corresponding positions.

Third option: K – 11, M – 13; Letters are paired with their corresponding positions. Therefore, this option is correct.

Fourth option: O – 15, X – 24; Letters are not paired with their corresponding positions.

Hence, the third option is correct.