Which of the Following Best Defines Boilerplate

Which of the following best defines boilerplate?

A) It refers to sentences and words from old documents that a writer uses in a new document without crediting the writer.
B) It refers to original content being created by a writer and copyrighting the information to protect it against plagiarism.
C) It refers to using the language from a previous document that a writer legitimately adds in a new document.
D) It refers to using someone else's work and passing it off as one's own online or in any public document.
E) It refers to the denial of access to a piece of writing because it has strict plagiarism rules.