Which technique is used to help the IP endpoints in your network determine the optimal packet size to send across your tunnels?

You have configured multiple IP-IP tunnels across your network to provide connectivity to remote sites.Which technique is used to help the IP endpoints in your network determine the optimal packet size to send across your tunnels?

A.
path MTU discovery

B.
fragmentation discovery

C.
end-to-end MTU discovery

D.
packet throughput discovery