Choose the correct option: Find the odd man out.

Concept: In an alphanumeric “odd one out” series, each item follows the rule: position of the first letter + the number = position of the last letter (A=1, B=2, ... Z=26). The item that breaks this consistent rule is the exception.

Application:

1. C5H: C is the 3rd letter; 3 + 5 = 8, the 8th letter is H — matches.

2. E6L: E is the 5th letter; 5 + 6 = 11, the 11th letter is K, but the given letter is L — does not match.

3. M4Q: M is the 13th letter; 13 + 4 = 17, the 17th letter is Q — matches.

4. T3W: T is the 20th letter; 20 + 3 = 23, the 23rd letter is W — matches.

Cross-check: Three of the four items consistently satisfy first-letter-position + number = last-letter-position; only one item breaks this pattern, confirming it as the exception.

Result: E6L is the odd one out.