ccbab ....... caa ........ bccc ............. a .........

A) babb

B) bbba

C) baab

D) babc

Correct answer:
A) babb

Description for Correct answer:
The given sequence may be grouped as follows

c c b a / b b c a / a a b c / c c b a / b

Therefore, Missing letters are b a b b


Please provide the error details in above question