AutoCAD, extension * .BAK is: A. A backup triggered B. A copy of automatic backup of autoCAD C. A file type from another application

The Right Answer is 

B. A copy of automatic backup of AutoCAD>>>>>thanks

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B. A copy of automatic backup of AutoCAD

AutoCAD, extension * .BAK is:

 A copy of automatic backup of autoCAD

B

B

Correct Answer is "B"

I agree Mr. Syed Shan Haider the Answer is.

B. A copy of automatic backup of AutoCAD

its B.Although these type of files have been replaced by the cloud backup service "Autodesk360".

Answer B. A copy of automatic backup of AutoCAD. We can set this option to be "ON" or "OFF".

Q. has answered from my colleagues

Thanks to all