Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to set, reset, remove and recover the password of ms word files [title] Open the word file you want to protect. [step] Click the microsoft office button. On the top left side, and then click to-] prepare-] encrypt document. [title] In the encrypt document dialog box, input a password in the password box and click ok.

Ending1: [title] Highlight the " confirmation " button and double-click on it. [title] Click start, select " authorize ", and choose " ok ". Ending2: [step] Keep clicking ok to confirm your password. As with making the account, that is key to protecting the account you want to lock. Ending3: [step] An encrypted word file will be extracted and removed from the safety and formatting section. Next, left click on a word file in the password field and select options/properties. Ending4: [title] In the confirm password dialog box, enter the previous password again and click ok. [title] At last, save the password and the ms word 2007 file.

Answer format: ending1/ending2/ending3/ending4