1.  In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative : a _ bbc _ aab _ cca _ bbcc

A. bacb
B. acba
C. abba
D. caba

Answer: Option B

Explanation:

The series is aabbcc / aabbcc / aabbcc.

Thus, the pattern aabbcc is repeated.