In this question, there are four groups of letters, words or numbers listed as (1), (2), (3) and (4). On of the groups does not belong to the same category as others. Find the odd one out. Refer to above.
The correct option is (A): USTO Explanation: The odd one out is USTO because it is the only group where all the letters are unique, while the other groups have repeated letters. Therefore, USTO is the correct answer.