Which part of the plot is most clearly the exposition? A. A college student wanted desperately to pass her Particle Physics class, but her grade depended entirely on how she performed on the final exam.

B. She studied for two weeks and then showed up to class, ready and confident. But the questions on the exam looked like this: "True or false? Atoms." She strode up to the teacher and shouted, "This test is impossible!"

C. The teacher smiled and congratulated the student, and explained that standing up to him was part of the test. She had passed.

D. The student, delighted, skipped out of the classroom, and later learned that she had gotten an A in Particle Physics.