Series Completion - Verbal and Reasoning

Directions to SolveIn each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.
Q1:

ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?

A IBU

B UT

C UTI

D BUT

E None of these

ANS:C - UTI

In the first step, one letter from the beginning and one from the end of a term are removed to give the next term. In the second step, two letters from the beginning of a term are removed. These two steps are repeated alternately.