Which reason is likely that R3 is missing the 2001:DB8:100:/64 route?

Refer to the exhibit.

All routers have FULL OSPF adjacencies

Which reason is likely that R3 is missing the 2001:DB8:100:/64 route?
A . R1 has prefix suppression configured
B . R1 has an incorrect area number configured
C . R1 has loop-free alternate routing configured
D . R1 has LSA throttling configured

View Answer

Answer: A