Write a question about the following article.

My husband I have Kindles and ca n't imagine life without them . Imagine having 200 books in a binder the size of a small trade paperback . With close to 150,000 books , newspapers , and magazines available now for download and more being added every day the Kindle is perfect ! You can download books from your computer via USB or in Sprint EVDO service areas your books are delivered wirelessly for free .

Question:
What may be the reason for this advertisement of the Kindle ?
Options: a. They want to make as much money as possible . b. None of the above choices . c. They want others to stop reading physical books . d. They want to persuade others to buy a Kindle .