Refer to the show outputs in the exhibit. R1 is using a route-map to perform AS-path prepending for only a set of prefixes. When the route-map is applied, R1 only sends the prefixes with the AS-path prepended. All other prefixes in the BGP table are no longer advertised out to the BGP neighbor.What is causing this problem?
Exhibit:

A.
The access-list is missing the access-list 26 permit any any statement.

B.
The route-map is applied in the wrong direction.

C.
The route-map set-as deny 500 should be route-map set-as permit 500 instead.

D.
The BGP session on the R1 router has not been reset since the route-map was applied.

E.
The access-list 26 permit 0.26.0.0 255.0.255.255 statement is wrong.