Correct Answer: B
Explanation:
The given series is a combination of two series.
I: L, J, H
II: O, Q, ?
I consists of 12th, 10th and 8th letter from the beginning of alphabets.
II consists of 12th, 10th and 8th letter from the end of alphabets.
So, the next letter should be 8th letter from end of alphabets i.e. S