According to IETF standards, which two statements are correct about EVPN/VXLAN deployments?

The IETF standards for EVPN-VXLAN define the scalability and forwarding behavior of the architecture.

VXLAN Scale (Statement B):The Virtual Network Identifier (VNI) is a24-bit fieldin the VXLAN header. This allows for up to $2^{24}$ unique identifiers, which translates to approximately16 milliondistinct VXLAN broadcast domains (segments) within a single fabric. *Forwarding Behavior (Statement D):VXLAN is a MAC-in-UDP encapsulation technology. When a Layer 2 frame enters the tunnel at a VTEP, theoriginal Layer 2 frame(including the original source and destination MAC addresses) is encapsulated into a UDP/IP packet and transported across the IP underlay. When it reaches the egress VTEP, the header is removed and theLayer 2 frame is forwarded unchangedto the destination host.

Why others are incorrect:Statement A is incorrect because EVPN itself can technically support more than 16 million domains, but the data plane (VXLAN) is the limiting factor in this specific deployment scenario. Statement C is incorrect because VXLAN encapsulates Layer 2 frames, not just "IP packets," and it treats the entire frame as a payload.