SATURDAY morning was to come, and all the summer world was bright and fresh, and brimming with life. There was a song in every heart; and if the heart was young the music issued at the lips. There was cheer in every face and a spring in every step...

What is the effect of the underlined text?

A. It foreshadows that something terrible and unexpected is about to happen.

B. It sets up a flashback to an earlier time when Tom was content.

C. It creates a contrast with Tom Sawyer's feelings about his chore.

D. It establishes a specific historical setting for the narrative.​