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

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

• Add 10 comma-separated audience IDs into one cell
• Add 10 rows and 10 columns with an audience ID in each row and column
• Add 10 rows with a different audience ID in each row
• Add 10 columns with a different audience ID in each column

Correct answer is

• Add 10 comma-separated audience IDs into one cell

Explanation:If you are using multiple values in a single targeting cell, then they should be comma-separated.

Read more here:https://support.google.com/richmedia/answer/3454860