Which Two Statements Regarding ACI Multi-Site Are True? (Choose Two

Which two statements regarding ACI Multi-Site are true? (Choose two.)

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