Finish the following sentence with the best choice: How to mark all emails as read on gmail

Choices:
- On the main screen, find the button that has 3 small circles, lined up vertically. Click that, and then click "Mark all as read"
- On the main screen, find the button that has 3 small circles, lined up horizontally. Click that, and then click "Mark all as read"

Answer:
On the main screen, find the button that has 3 small circles, lined up vertically. Click that, and then click "Mark all as read"