Read this portion of an outline from a passage.
I. Print books and E-books
A. Print Books
1. Physicality of print books
2. Environmental friendliness of print books
3. Cost of print books
4. Convenience of print books
B. E-books
1. Physicality of e-books
2. Environmental friendliness of e-books
3. Cost of e-books
4. Convenience of e-books
What are the points of comparison used in this passage?
the history of all books, the history of digital books, and the history of print books
O physicality, environmental friendliness, cost, and convenience
O the passage first talks all about books printed on paper and then all about e-books
O weightlessness, ease of transport, and ease of use