Choose the correct order of the given alternative : b _ b _ bb _ _ bbb _ bb _ b
A). bbbbba
B). bbaaab
C). ababab
D). aabaab
ababab
The series is babb/bbab/bbba/bbbb.. Thus, in each sequence, 'a' moves one step forward and 'b' takes its place and finally in the fourth sequence, it is eliminated.