What is one strategy to evaluate how well thumbnails distinguish content?

1. Examine every thumbnail and ensure no two thumbnails look similar
2. Review the Thumbnails report to see likes and dislikes
3. Conduct A/B testing for one video with 5 different thumbnails
4. Do a side-by-side comparison of 10 thumbnails against a similar channel

Correct Answer:
Do a side-by-side comparison of 10 thumbnails against a similar channel