Which routers should be configured to the sinkhole router?

Refer to the exhibit.

The SP network is configuring Remote Filtering to protect hosts on network 152.68.19.0/24. Which
routers should be configured to the sinkhole router?

A.
L and K

B.
A, B, F, G, and H

C.
C and D

D.
A, B, G, and H

E.
A, D, F, G, and L