Click the Exhibit.

Referring to the exhibit, the GRE tunnel between R-1 and R2 allows connectivity between User-1 and Server-1.
User-1 can communicate with Server-1 with packets that are up to 1448 bytes in size.
However, if the packet size is larger than 1448, User-1 cannot communicate with Server-1.
In this scenario, how do you solve the communication problem?

A.
Change the physical MTU on the ge-0/0/3 interfaces on R-1 and R-2 to 1448 bytes.

B.
Change the physical MTU on the gr-0/0/0 interfaces on R-1 and R-2 to 1448 bytes.

C.
Apply the allow-fragmentation statement to the GRE tunnel configuration.

D.
Apply the path-mtu-discovery statement to the GRE tunnel configuration.