这些文件已经在星期一改正/校正了.Translate it into English

这些文件已经在星期一改正/校正了.Translate it into English
Please provide a better answer and explain in mandarin.
1)These documents were updated on Monday.(Plural)
2)This document was updated on Monday(Singular).
3)These files have been corrected on Monday .
4)These documents have been corrected on Monday.
5）These files have already been proofread on Monday.