The "Fall" of the Roman Empire in the Fifth Century

The "fall" of the Roman Empire in the fifth century C.E.has been much exaggerated because:

A) Diocletian essentially ended Roman civilization in 284 C.E.
B) many Roman institutions continued to function after the triumph of German-speaking invaders.
C) Late Antiquity did not begin until the seventh century C.E.
D) Christianity was never adopted as the state religion of Rome.
E) it transitioned relatively easily to the modern Italian state.