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Which operating system introduced new features such as virtual memory and the ability to drag and drop files in 1991? A. DOS B.Windows C.Macintosh D.Unix​
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Which operating system introduced new features such as virtual memory and

the ability to drag and drop files in 1991?
A. DOS
B.Windows
C.Macintosh
D.Unix​

User Hat
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1 Answer

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it was a Macintosh which was released by Apple may 13th 1991.

User Aron Asztalos
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