Which Layer 2 overlay scheme accomplishes this task?

A customer wants to extend a Layer 2 network over a Layer 3 Nexus 9000 infrastructure.

Which Layer 2 overlay scheme accomplishes this task?
A . STP
B . vPC
C . VXLAN
D . EIGRP

Answer: C

Explanation:

XLAN tunnels the Layer 2 network over the Layer.

Reference: https://www.ciscopress.com/articles/article.asp?p=2999385&seqNum=3