Find the word which has a different stress pattern from the others

The words with different stress patterns are as follows:

1. C. bully (the stress is on the first syllable, while the others generally have a different stress pattern).
2. C. forum (the stress is usually placed on the first syllable, whereas the others often have stress on the second syllable).
3. C. session (the first and others have stress on different syllables).
4. A. bullying (the first syllable is stressed, while others generally have a different pattern).
5. A. enjoyable (the stress pattern differs compared to the others).
6. A. media (the stress pattern is distinctive).
7. A. competition (completely different stress pattern from the others in this set).
8. C. schoolwork (stress pattern differs).
9. C. schoolwork (stress differs from the others).
10. C. schoolwork (again).

Out of the first given set, C. bully stands out with its distinct stress pattern.