What’s the most efficient way to target one headline to 10 different audience IDs in a feed?

1. Add 10 rows and 10 columns with an audience ID in each row and column
2. Add 10 comma-separated audience IDs into one cell
3. Add 10 columns with a different audience ID in each column
4. Add 10 rows with a different audience ID in each row

Correct Answer:

• Add 10 comma-separated audience IDs into one cell