Question about daisy chaining DisplayPort monitors

If I were to dasiychain multiple (let's say 3 for the sake of argument) DisplayPort monitors (and only DP monitors, no other connectors being used in this hypothetical scenario), which one would show the UEFI screen?
I was explaining why DVI was the UEFI screen instead of DisplayPort to one of my friends when this came up, and I am clueless as to which monitor would show the UEFI.

All of them

Might depend on the card.. In the case of the Fury I no longer own, all monitors displayed same data; the GTX 970 currently in my system only displays data from the first monitor tethered from the GPU.