If you wish to sign out of your microsoft account, tap or click on the ribbon to open the backstage view and then tap or click the account tab to display the account gallery, and tap or click the sign out link.

According to you have to http://windows.microsoft.com/en-PH/windows-8/sign-in-out-of-windows you have to click on the account picture on the upper right hand corner to access the backstage view and you have to tap or click the account tab to view the account gallery and sign out from the account. You may also want to check this link as well: https://support.office.com/en-us/article/Sign-out-of-your-Microsoft-account-268b49c8-398f-4057-8a3f-e376789f273a

the anwser is ethier d or e

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