When upgrading the equipment software, which statement about the operating window time is wrong?

When upgrading the equipment software, which statement about the operating window time is wrong?
A . Determined by the user’s service interruption time
B . The time must be greater than the execution time of the upgrade operation
C . Allow a certain amount of time for troubleshooting
D . The operating window time only needs to be notified to the network maintenance personnel, not to the user.

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Answer: D