题目内容：
Essentially, you will be posting your work on our non-fiction book review board, which you can access only with an administration-approved user name and password. Since you need a password to log in, your () password is: crimson. You can change this password for your convenience after you have logged on to the site. Welcome again, and we look forward to working with you!
A.temporary B.approximate C.previous D.permanent
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