The ASBR-summary LSA is:

A.
Generated by the ABR and describes reachabilty to the ASBR for routers in the same area with
the ASBR

B.
Generated by the ASBR and describes reachability to itself

C.
Generated by the ABR and describes reachabilty to the ASBR for routers in a different area
from the ASBR