Exam 300-620 topic 1 question 158 discussion

I think it's C In a Cisco ACI Multi-Pod deployment, the maximum supported latency between pods is 50ms RTT, allowing for a geographical distance of up to 2500 miles, and you can scale up to 12 pods with a maximum of 400 leaf switches in a single deployment https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c11-737855.html#:~:text=The%20other%20three%20topologies%20apply,of%20up%20to%202500%20miles.

The Cisco® Application Centric Infrastructure (Cisco ACI™) Multi-Pod solution is an evolution of the stretched-fabric use case. Multiple pods provide intensive fault isolation in the control plane along with infrastructure cabling flexibility. As the name indicates, it connects multiple Cisco Application Policy Infrastructure Controller (APIC) pods using a Layer 3 interpod network (IPN). Note: Pod spine switches cannot be connected back to back. IPN supports only Open Shortest Path First (OSPF) connectivity between the IPN and the spine switches. Though each pod consists of its own spine and leaf switches, all the pods reside within the same fabric and are managed by a single APIC cluster. This approach provides a single management and policy domain across all pods for end-to-end policy enforcement. In the data plane, the Multi-Pod solution uses Multiprotocol Border Gateway Protocol (MP-BGP) Ethernet Virtual Private Network (EVPN) connectivity over the IPN between the spine switches from each pod for communication using Virtual Extensible LAN (VXLAN) encapsulation.