What is the main reason for a multihomed customer to apply an outbound route filter to filter the BGP updates from the customer router to the service provider router?

What is the main reason for a multihomed customer to apply an outbound route filter to filter the BGP updates from the customer router to the service provider router?

A.
To ensure that the return traffic into the customer network will be load balanced between the different service providers.

B.
To ensure that the outbound traffic from the customer network will be load balanced between the different service providers.

C.
To prevent the customer network from becoming a transit AS.

D.
To allow the customer network to become a transit AS.

E.
To reduce the size of the BGP table on the customer network internal (core) routers.

F.
To reduce the size of the BGP table on the service provider internal (core) routers.