What is the function of the mode ' w+'?

1.	What is the function of the mode ' w+'?
A.	create text file for writing, discard previous contents if any
B.	create text file for update, discard previous contents if any
C.	create text file for writing, do not discard previous contents if any
D.	create text file for update, do not discard previous contents if any
Answer» C. create text file for writing, do not discard previous contents if any

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What is the function of the mode ' w+'?

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