Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to install visio professional 2007 on a laptop by using msdnaa online software system [title] First you must register in your university/college elms for the msdnaa online software system. [title] Once you have registered in the elms, you will receive an email from your university/college elms. [title] Open the email, read it carefully and write down your username and password.

Ending1: [title] Click the link in your email to open the webpage of msdnaa online software system. [title] Click the " log in " button on the top left corner and log in by entering your username and password. Ending2: [title] After your password is in place, press the alt key (-) key on your keyboard. [title] After some moments, press the alt key again. Ending3: [title] Perform the following tasks to accommodate desktop operating system preferences on the computer : [substeps] Print the desktop art from your university/college. If allowed, you can import photographs and recent videos on the hard drive. Ending4: [title] If your psp states that flash-browsing os for hbo after installation, skip to step 4. [title] If you have not yet installed the apk extension for flash-browsing, go to step 5.

Answer format: ending1/ending2/ending3/ending4