Which of the following statements comparing deb it cards to credit cards is true?

Which statement best summarizes the author’s claim?

What is a glossary? a statement of the author’s purpose in writing the book, which may include suggestions for using the book a page at the front of a book that lists units and chapters with their page numbers an alphabetical list of the specialized words and terms used in the book and their definitions an alphabetical list of all topics covered in the book and the pages on which they can be found

In figure 4 of the telephone components what do the labels lettered a to e