Here was something fresh — this thing of getting up in the middle of the night to go to work. It was a detail in piloting that had never occurred to me at all. I knew that boats ran all night, but somehow I had never happened to reflect that somebody had to get up out of a warm bed to run them. I began to fear that piloting was not quite so romantic as I had imagined it was; there was something very real and work-like about this new phase of it…. Mr. Bixby made for the shore and soon was scraping it, just the same as if it had been daylight. And not only that, but singing — “Father in heaven, the day is declining,” etc. –Life on the Mississippi,
Mark Twain

Which statement about the passage is true?
A - The passage is regionalist and realist because Twain uses local color. B - The passage is regionalist and realist because Twain presents the ambitions of ordinary boys.
C - The passage is regionalist and realist because Twain combines local color and everyday life.