Which of the following best compares the airflow on the upper surface of a wing to that of the underside of a wing in motion?

A. The air molecules traveling over the upper surface of the wing meet the air molecules from the lower surface of the wing at the trailing edge at precisely the same time.
B. The air traveling over the upper surface of the wing goes much faster and much farther than the underside airflow, which creates downwash.
C. The air traveling over the upper surface of the wing goes slower and reaches the traveling edge later than the underside airflow, which creates upwash.
D. None of these answers is correct.