IBM released its first PC in 1981. Can you name the operating system which was most popular at that time?

IBM released its first PC in 1981. Can you name the operating system w

1.	IBM released its first PC in 1981. Can you name the operating system which was most popular at that time?
A.	MS-DOS
B.	PC-DOS
C.	OS/360
D.	CP/M
E.	None of the above
Answer» E. None of the above

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IBM released its first PC in 1981. Can you name the operating system which was most popular at that time?

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