Which definition best describes an internet Exchange Point $($IXP$)?$

The physical infrastructure through which internet Service Providers $($ISP$5)$ and Content Delivery Networks $($CDNs$)$ exchange Internet traffic between their networks

R collection of connected internet Protocol $($IP$)$ under the control of one or more network operators

An e$-$commerce platform that allows for the exchange of services between two or more companies

A geo sationary satellite used to transmit and receive packets of information