The "New" Atticus Character from "Go Set a Watchman" Was

The "new" Atticus character from "Go Set a Watchman" was a betrayal of White liberal idealism, feeding a suspicion that idealism was less than absolute. In other words, the author is saying ______.

A) that Atticus had been secretly racist all along, and people had falsely identified with him
B) that ideas such as White liberal idealism could be twisted and turned to become something different as people change
C) that it could suddenly, randomly turn against the people it purported to help
D) that idealism might not be as strong of a position when looked back on