How does a table of contents differ from an index?

A$.$ A table of contents can be created from a References tab selection, while an index must be manually created.

B$.$ A table of contents is arranged alphabetically by topic, while an index lists items in page number order.

C$.$ A table of contents is only used in books, while an index can appear in shorter reports.

D$.$ A table of contents is based on a hierarchy of headings in a document, shown in page number order, while an index is an alphabetical listing of selected terms and related page numbers.