What are two descriptions of ACI multi-site? (Choose two.)

What are two descriptions of ACI multi-site? (Choose two.)
A . The Inter-Site network routers should run OSPF to establish peering with the spines.
B . The Multi-Site orchestrator must be directly attached to one ACI leaf.
C . Routers in the inter-Site network must run OSP
D . DHCP relay, and MP-BGP
E . ACI Multi-Site is a solution that allows one APIC cluster to manage multiple ACI sites
F . ACI Multi-Site is a solution that supports a dedicated APIC cluster per site

Answer: A,E