Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.
GAIN : HBKP :: ACHE : BD JG :: CAKE : ?
A. DBNH
B. DBMH
C. DBNG
D. DBMG
Sol:
Pattern follows here is: +1, +1, +2, +2.