Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
MIN, NJM, OKL, PLK, ?
AQWS
BHGF
CQMJ
DUJH
AQWS
BHGF
CQMJ
DUJH
Related Questions:
A square sheet of paper is folded along the dotted line successively along the directions shown and is then punched in the last. How would the paper look when unfolded?