Which two techniques achieve the load balancing and redundancy for inbound traffic?

A content provider uses ISP-A and ISP-B for Internet transit service for the purpose of redundancy and load balancing. The content provider has one address range assigned to it.

Which two techniques achieve the load balancing and redundancy for inbound traffic? (Choose two)
A . BGP Local-preference attribute
B . BGP MED attribute
C . Use ISP-A for outbound traffic and ISP-B for inbound traffic
D . BGP AS-prepend technique
E . Address range split into two more specific prefixes, then advertise one specific prefix per ISP
F . Aggregate all prefixes received from both ISPs into a less-specific prefix

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Answer: D, E