When Requesting SSH Access to a Remote System, a User

Multiple Choice

When requesting SSH access to a remote system, a user accidentally emailed the id_rsa key to the administrator. Which of the following should the user do NEXT?

A) Run the ssh-add command to add the remote system to known_hosts . Run the ssh-add command to add the remote system to known_hosts .
B) Ask the administrator to run chmod 600 id_rsa on the remote system. Ask the administrator to run chmod 600 id_rsa on the remote system.
C) Delete id_rsa key file and send the id_rsa.pub key file instead. Delete key file and send the id_rsa.pub key file instead.
D) Stop using that key and run ssh-keygen to generate a new key pair. Stop using that key and run ssh-keygen to generate a new key pair.