The Newsreel Sequence in Citizen Kane

The newsreel sequence in Citizen Kane

A) provides the only presentation of the events in Kane's life in chronological order.
B) presents a brief version of narrative events in roughly the same order as in the film as a whole.
C) summarizes events spectators have already seen in flashback and provides a crucial clue to the narrative's resolution.
D) finally gives the spectator an explanation of Kane's mysterious final word, "Rosebud."