Read the following article and select the best answer. Article: Who wants to carry a _ bag to school? No children. Nobody wants one shoulder to be lower than the other, and paining too. In India, most of us would look at the reduction of textbooks as a way out. But in a country like America, there are always more choices. A company called Goreader has created a "school bag" which is the size of a laptop computer, weighing about 2.5kg. The Goreader has a colour screen and can "hold" all the textbooks that a student may need, says a report in "The Asian Age" newspaper. The company plans to work closely with the publishers of test books so that these books can be supplied on the Internet. All the students will have to download their textbooks. Making notes and marking important parts of a lesson can be done just as lots of students have done on their textbooks before. At present, the plan is being tested out in a university. Richard Katzmann, the owner of the company is having his creation tested at Chicago's DePaul University, where he studied. Does that mean it is goodbye to the newspaper, and the smell of the black ink? Question: The Goreader may be a machine _ . - that can work as a teacher - that can be used as textbooks - that can cheat students. - that can hurt students
The answer to this question is:
that can be used as textbooks