What happens right after transcription ends?

In Eukaryotes, maturation if the RNA into mRNA by slicing, caping and poly-adenylation. The mature mRNA is transferred to cytoplasm to be translated into proteins by ribosomes.
In Prokaryotes, translation and transcription occur simultaneously.

“Transcription termination. RNA polymerase will keep transcribing until it gets signals to stop. The process of ending transcription is called termination, and it happens once the polymerase transcribes a sequence of DNA known as a terminator.”

C- a hypothesis or d- an observation