Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to change firefox application settings [title] Launch firefox. [step] To open the firefox browser on your computer, click on that fox icon on your desktop, start menu, or taskbar. [title] Click on the " settings " button.

Ending1: [step] It looks like two overlapping gear arrows on a toolbar on the left-hand side of the window. [title] Click on " account " in the settings page. Ending2: [step] It's the cog icon at the top-left corner of the window. Once you click it, all of your settings will be saved. Ending3: [step] It's the three-lined icon at the top-left of your web browser window. [substeps] If you don't see your settings, click " security " from here, and then click " new settings. Ending4: [step] Look for the icon with three short horizontal lines arranged on top of the other found at the top-right corner of the browser. Click on the icon to display a drop-down menu.

Answer format: ending1/ending2/ending3/ending4