What happens when a 1500-byte IPv4 packet traverses the GRE tunnel from host X to host Y, assuming the DF bit is cleared?

Refer to the exhibit.

MTU has been configured on the underlying physical topology, and no MTU command has been configured on the tunnel interfaces.

What happens when a 1500-byte IPv4 packet traverses the GRE tunnel from host X to host Y, assuming the DF bit is cleared?
A . The packet arrives on router C without fragmentation.
B . The packet is discarded on router A
C . The packet is discarded on router B
D . The packet arrives on router C fragmented.

View Answer

Answer: D