I have this question in my study guide for an exam coming up shortly would anyone be able to give me an explanation for the answer

Use the following information to answer the next two questions. E D C 15. Which point(s) represent(s) an example of constructive interference? A. B and D B. A, C, and E C. A, C, E, and F D. A, B, C, and E 16. Which point(s) represent(s) an example of destructive interference? A. B and D B. A, C, and E C. A, C, E, and F D. A, B, C, and E Use the following information to answer the next