What are three BGP configuration characteristics of a multihomed customer that is connected to multiple service provider

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What are three BGP configuration characteristics of a multihomed customer that is connected to multiple service providers? (Choose three.)

A. The multihomed customer can use local preference to influence the return traffic from the service providers
B. The multihomed customer announces its assigned IP address space to its service providers through BGP
C. The multihomed customer has to decide whether to perform load sharing or use a primary/backup implementation
D. The multihomed customer must use private AS number
E. The multihomed customer configures outbound route filters to prevent itself from becoming a transit AS