Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to add websites to stumbleupon [title] Open your web browser. [title] Visit the stumbleupon website. [title] Login to your account.

Ending1: [step] ( or just login-just type in your email address and password and click on log in. [title] Click on the " custom settings " button at the top right-hand corner. Ending2: [step] You will be asked to create a new account, once you have signed in, click " on " to create one , [title] Click the link that says " subscribe to stumbleupon ". [title] Choose to reuse your old domain, the name that you are familiar with. Ending3: [title] Click the profile tab from the page that displays. [title] Click the " add sites " button. Ending4: [step] Log in using your email address and password if you don't already have one. When you log in, you will be brought to the stumbleupon page.

Answer format: ending1/ending2/ending3/ending4