In the following question, select the odd letter from the alternatives given below. Three letters are vowels, while one letter is a consonant. Identify the odd one out. (A) A (B) S (C) U (D) I (E) E

Introduction / Context:
This question tests basic English letter classification: vowels vs consonants. Vowels in English are A, E, I, O, U. Any other letter is a consonant. The odd letter is the one that does not belong to the vowel group.

Given Data / Assumptions:

• Vowels are: A, E, I, O, U.
• Consonants are all remaining letters.
• We identify which options are vowels and which are not.

Concept / Approach:
Check each option and classify it as vowel or consonant. If four options are vowels and one is a consonant, that consonant is the odd one out.

Step-by-Step Solution:

Verification / Alternative check:
Another quick verification is to memorize the vowel set as 'AEIOU'. Compare each letter against this set. A, E, I, and U appear in the vowel set, but S does not. Therefore S is the odd letter.

Why Other Options Are Wrong:

Common Pitfalls:
Some students incorrectly include Y as a vowel in every situation, which can cause confusion in other problems. In this question, the classical vowel set is used, so classification is straightforward. Another pitfall is overthinking alphabet position or shape when the simplest and most direct classification (vowel vs consonant) is clearly intended by the options presented.

Final Answer:
S