Question Does this monitor support 480p, 720p,1080p, 1440p and 4k at 144Hz with and without VRR?

[knowledge2121]

I am looking at a Samsung 4K monitor(LS43CG702NNXZA), And I am wondering if it supports common resolutions at 144Hz with and without VRR. Here is a picture from the manual:

Questions:

- Does this monitor support 480p, 720p,1080p, 1440p and 4k @144Hz with VRR support?
- How about without VRR ? does it support 480p, 720p,1080p, 1440p and 4k @144Hz?
- What does the RB at the end of the resolutions mean? should I be concerned about it?
- Does this display have AI upscaling?