What do Pods use to allow Pod-to-Pod communication in a Cisco ACI Multi-Pod environment?

What do Pods use to allow Pod-to-Pod communication in a Cisco ACI Multi-Pod environment?
A . over Layer 3 directly connected back-to-back spines
B . over Layer 3 Out connectivity via border leafs
C . over Layer 3 IPN connectivity via border leafs
D . over Layer 3 IPN connectivity via spines

View Answer

Answer: D

Explanation:

Reference: https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric­infrastructure/white-paper-c11-737855.html