You are implementing an IKEv2 IPsec tunnel between two Internet routers by using PSKs. After the configuration is complete, the IPsec VPN tunnel fails to negotiate. You enable debugging to troubleshoot the issue.Which action do you take to resolve the issue?

Refer to the exhibit.

You are implementing an IKEv2 IPsec tunnel between two Internet routers by using PSKs. After the configuration is complete, the IPsec VPN tunnel fails to negotiate. You enable debugging to troubleshoot the issue.Which action do you take to resolve the issue?
A . Verify the IKEv2 keyring address and PSK configuration on both routers.
B . Configure an IKEv2 authorization policy to authorize the peer router.
C . Configure the IKEv2 identity of each router by using an email address.
D . Modify the Diffie-Hellman key used in the IKEv2 policy.

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Answer: D