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. The DF bit has been set.
C. R3 is missing a return route to 10.99.69.0/30.
D. R2 and R3 do not have an OSPF adjacency.
Correct Answer: B