TOEFL Reading: ETS-TOEFL阅读机经 - J571FZ78374D51A8L$

Which of the following can be inferred from paragraph 2 about the process of making paper in fourteenth- and fifteenth-century Europe? A. It was based on the process previously used to make parchment and vellum. B. It was replaced by a process that added steps to create a better quality of paper. C. It was dependent on the availability of discarded or used cloth. D. It produced paper that was more fragile than paper made in China.