The correct answer is B. On every page in the document
Explanation
Footnotes are a writing resource that serves to provide additional information to the reader to complement the information in the text. One of its characteristics is that it is not included in the text fluidly, but is referenced by an asterisk or a number, which refers to an annotation in the footer, that is, at the bottom of all pages.
In other cases, they serve to reference the sources where the information in the text came from. Also, it should be kept in mind that the footnotes are not part of the argumentative line of the text, so they should not contain important information for the compression of the text. When we use this resource, we must put a number next to the sentence that we want to accompany with additional information, then make a note at the bottom of the page, with the same number and there put the additional information. Additionally, in most programs when you add information in the footer the information will appear on every page of the document; although in some cases you can change this and make the information appear in only some pages. So, the correct answer is B. On every page in the document
