Answer: A, B, C, E
Step-by-step explanation:
You answered your own question, so I'll just explain why they are correct.
A: A works cited is meant to credit people for information that you used while writing an essay.
B. Plagiarism is "the practice of taking someone else's work or ideas and passing them off as one's own." By crediting someone else that helped you, you acknowledge that they originally discovered those ideas.
C. A works cited page is an organized list of sources.
D is a side effect of a works cited page, but lengthening a paper isn't one of its purposes.
E. By having a works cited, the reader can find out more about the topic using the sources that you cited.
Hope this helped.