2 Now the way that the book winds up is this: Tom and me found the money that the robbers hid in the cave, and it made us rich. We got six thousand dollars apiece--all gold. It was an awful sight of money when it was piled up. Well, Judge Thatcher he took it and put it out at interest, and it fetched us a dollar a day apiece all the year round --more than a body could tell what to do with. The Widow Douglas she took me for her son, and allowed she would sivilize me; but it was rough living in the house all the time, considering how dismal regular and decent the widow was in all her ways; and so when I couldn't stand it no longer I lit out. I got into my old rags and my sugar-hogshead again, and was free and satisfied. But Tom Sawyer he hunted me up and said he was going to start a band of robbers, and I might join if I would go back to the widow and be respectable. So I went back.
How does Mark Twain depict Huck Finn in ways that make him a believable, realistic character?

A) Twain gives Huck a mother figure and father figure and a set of friends to hang out with.
B) Huck is depicted as a more virtuous person than any other person in the entire village and book.
C) Twain gives Huck a backstory, a unique voice rich in Southern dialect, and a mischievous personality.
D) Huck mentions in the beginning that he was already written about in a book by Twain called "Tom Sawyer."