If you are faced with a complex network failure, and after evaluation, it is considered that the troubleshooting cannot be completed in a short time, and at this time the user urgently needs to restore the availability of the network, then which is the correct approach?

If you are faced with a complex network failure, and after evaluation, it is considered that the troubleshooting cannot be completed in a short time, and at this time the user urgently needs to restore the availability of the network, then which is the correct approach?
A . Tell users that this is impossible
B . Directly build an alternative network environment without notifying the customer
C . Always try to troubleshoot, and do not inform users of the current difficulty of troubleshooting
D . Communicate with users whether it is possible to skip the faulty node and build an alternative network environment

Answer: D