Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to activate microsoft office 2010 [title] Launch the microsoft office 2010 application on your computer. [title] Click on " file " and point to " help. [title] Click on " activate product key.

Ending1: [title] Browse for or install microsoft office 2011. [title] Highlight the green " microsoft office 2011 ". Ending2: [step] The activation wizard will display on-screen. [substeps] If " activate product key " is not displayed under " help, " your software has already been activated, and no further action is needed. Ending3: [title] Click on " browse my microsoft office 2011 in free trial. [title] Go to " help " in the " file " menu and select " activate service key " from the drop-down list; click " activate free trial. Ending4: [title] Navigate to the microsoft office program and click on " finish. [step] Microsoft office 2013 uses the special key f5 for keykeylogging.

Answer format: ending1/ending2/ending3/ending4