Why do the extended pings fail?

Refer to the exhibit.

R1 is able to ping the R3 fa0/1 interface.

Why do the extended pings fail?
A . The maximum packet size accepted by the command is 1476 bytes.
B . R3 is missing a return route to 10.99.69.0/30
C . R2 and R3 do not have an OSPF adjacency
D . The DF bit has been set

View Answer

Answer: D