Freesia is trying to explain wave interference to her friend. She uses an analogy involving students pushing on a box. Which of these statements could Freesia use to explain destructive interference of waves? a. When two students push equally on opposite sides of the box, their pushes cancel each other out.

B. When two students push equally in the same direction on a box, the effect of the pushes is greater than either separate push.

C. When one student pushes up on a box and another student pushes on the side, the box moves more quickly.

D. When one student pushes down on a box and another student pushes on the side, the box is more difficult to move.