Which sentence provides the clearest sense of a story's setting?

A. Olga turned to the index of the book to find any mention of the
Great Depression.

B. Waves of nausea swelled from my core, making me feel like I
wanted to vomit.

C. "What I'm asking you for," said Rick, "is $100,000 for 5 percent of
the company."

D. The hull of the submarine groaned, yet the captain insisted that we
keep descending